Dharma · AI Companion

自界

svadhātu

「自界」指一法自身所系所属之界类,即堕自相续、各别决定之差别种子及所系界系;不含《摄论》「证得自界」之如来性净法身义。AI-generated

Type ViewDifficulty IntermediateTruth-level span I · dependent arising ⇢ II · emptinessInitial AI estimate · evolves with use

取「一法自身所系所属界类范围」义:法相界差别于实有层教授(一),性空观界止于二重;「如来自具之法界本性」为同名异指,不并入同一跨度。

A Contemporary ReadingAI-generated


这个概念在说什么

Let's begin with the word itself. *Svadhātu* — "self-realm," "own-element." The Chinese term is 自界. It sounds almost like a bureaucratic phrase: the department a thing belongs to. And in one of its two major uses, that is exactly what it is. In the other, it is something far more intimate.

The Buddhist technical term *dhātu* (界) means "element," "realm," "class." The eighteen *dhātus* — eye, visible form, eye-consciousness, ear, sound, ear-consciousness, and so on through mind, mental objects, mind-consciousness — are the standard map of experience in the Abhidharma. Every moment of experience belongs somewhere on that map. "自界" is the answer to the question: *which* realm does this particular thing belong to? Its own. Not another's. The boundary drawn by its own nature.

But there is a second usage, from the Yogācāra tradition as transmitted in Paramārtha's translation of the *Mahāyānasaṃgraha-śāstra* (攝大乘論釋). There, "自界" does not mean "the realm a conditioned thing belongs to." It means the *inherent nature of a Tathāgata* — the intrinsically pure dharmakāya, the bedrock reality that is already there, not constructed, not acquired, not granted. "界是如來性,即性淨法身" — *the element is the Tathāgata-nature, that is, the intrinsically pure dharmakāya.* The "self" in this usage is not a classificatory label. It is the radical self-sufficiency of awakening itself: what is realized is realized by one's own great function, not caused by nothing, not given by another.

Two meanings. One points *downward* into the fine-grained architecture of experience, drawing lines between one thing and another. The other points *inward* to the ground of awakening that has no lines at all. We will need to hold both, because both are "自界," and both matter.

The Abhidharma sense: a thing's own realm

The *Abhidharmakośa-bhāṣya* (阿毘達磨俱舍論) uses 自界 in a precise, almost legalistic way. The key verse line: 「有繫自界得,無繫得通四」 — *the acquisition of what is bound is from its own realm; the acquisition of what is unbound pervades all four realms.*

What does this mean? In the Abhidharma, "acquisition" (得, *prāpti*) is a real entity — a kind of force that connects a person to a quality, a attainment, a state. When you acquire something *bound* (有繫) — that is, something belonging to a particular realm of existence (the realm of desire, the realm of form, the formless realm) — the acquisition itself is tied to that same realm. You don't acquire a desire-realm state from the formless realm. The acquisition belongs to the same "department" as the thing acquired.

But the *unbound* (無繫) — the unconditioned, nirvāṇa itself — is not tied to any realm. Its acquisition is said to "pervade the four" (通四): the three realms plus the realm of the unconditioned. Why? Because nirvāṇa is not a member of any realm; it is the *cessation* of all realms. So the acquisition of nirvāṇa cannot be confined to one department. It cuts across all departments — because it is the ending of all departmental business.

This is the first function of 自界: it draws the boundary of belonging. A thing's acquisition, its properties, its operations — all are confined to its own class. The Kośa states a general principle: 「攝自性非餘,以離他性故」 — *one includes only the intrinsic nature, not the other, because it is separate from the nature of the other.* When the teaching "includes" all dharmas under the categories of aggregates, sense-bases, and elements, what is included is each dharma's own nature — not some foreign nature that happens to be nearby. The reason is simple: each dharma is distinct from the nature of other dharmas.

And in the detailed analysis of the eighteen elements, the Kośa repeatedly uses the word 自 (own, self) to mark each element's proper domain: 自業 (own function), 自境 (own object), 自根 (own faculty), 自用 (own operation). The eye-element operates on visible forms — that is its own object. The ear-element operates on sounds — that is its own object. They are not mixed. Each element has its own job, its own field, its own scope. This is 自界 as the principle of non-confusion: each thing does its own work in its own domain.

This may sound dry. But it is a profound point about *precision*. The Abhidharma is not interested in vague talk about "everything being connected." It is interested in how things actually work — and things work *differentially*. Light does not do the work of sound. The eye does not hear. Each element contributes its specific function within the whole. To understand experience is to understand the specific contributions of each element — not to blur them into a warm glow of oneness.

The Yogācāra sense: the self-realm of a Tathāgata

Now the second usage. In Paramārtha's translation of the *Mahāyānasaṃgraha-śāstra*, 自界 appears in a completely different register. Here the question is not "which realm does this dharma belong to?" but "what is the ground of a Buddha's awakening?"

The text says: 「以證自界為因,五喜為果」 — *taking realization of the self-realm as the cause, the five joys are the result.* And then the crucial gloss: 「界是如來性,即性淨法身」 — *the element is the Tathāgata-nature, the intrinsically pure dharmakāya.*

The "self-realm" here is not a classificatory box. It is the *inherent nature of a Buddha* — the dharmakāya, the truth-body, which is intrinsically pure (性淨). This is not something a Buddha *achieves* in the sense of manufacturing it. It is something a Buddha *realizes* — uncovers, comes home to. The text emphasizes: 「如來自大功能所證,不由無因、不由他得」 — *realized by the Tathāgata's own great function; not without a cause; not obtained from another.*

Three points here:

1. By one's own great function (自大功能). The realization is active, not passive. It is not that something happens *to* the Tathāgata. The Tathāgata *does* it — through the vast capacity that is inherent to awakening itself.

2. Not without a cause (不由無因). This is not a random, causeless event. There is a causal structure to awakening. The cause is the self-realm itself — the intrinsic nature that, when realized, produces the five joys.

3. Not obtained from another (不由他得). This is the deepest point. Awakening is not a gift. It is not transmitted like a baton. It cannot be handed over. The self-realm is *self*-realized. Another Buddha can point the way, can teach, can inspire — but the realization itself is one's own. This is why the text says the two vehicles (二乘) — the śrāvakas and pratyekabuddhas — do not have the five joys: 「二乘無喜由不證」 — *the two vehicles have no joy because they do not realize this.* They have not realized the self-realm; they have not come home to the intrinsic nature. Their attainments are real but partial; their joy is real but limited.

The five joys (五喜) are the five kinds of joy that arise specifically from realizing this self-realm. The first two are directly tied to 證自界:

- First joy — "self-capability is immeasurable, therefore joy arises" (自能無量故生喜). Because one has realized the self-realm, one sees that one's own capacity is immeasurable — equal to that of all Buddhas, because all Buddhas share the same dharmakāya. Seeing this, joy arises.

- Second joy — "the work is established, therefore joy arises" (作事立故生喜). Because the Buddhas have realized the self-realm, the great work — the liberation of sentient beings — is established. Seeing that the work is founded on this realization, joy arises.

The remaining three joys — the taste of the dharma as one flavor, the fulfillment of one's aims, the perfection of virtues — unfold naturally from this same realization.

So the Yogācāra sense of 自界 is not about *boundaries* at all. It is about *ground*. The self-realm is the ground of a Buddha's being — the intrinsically pure nature that is not made, not acquired, not given, but *realized*. It is the deepest "own-ness" there is: not the own-ness of a particular dharma within a classification scheme, but the own-ness of awakening itself, which belongs to no one and is realized by each.

Two meanings, one word

How do these two senses relate? They are not contradictions. They are two different *levels* of analysis.

At the level of conditioned phenomena (saṃskṛta dharma), 自界 means: each thing belongs to its own class, has its own function, operates in its own domain. This is the *analytic* sense — the sense that allows precise understanding of how experience is structured.

At the level of ultimate reality (the unconditioned, the dharmakāya), 自界 means: the inherent nature that is one's own, that is realized by oneself, that is not given by another. This is the *realizational* sense — the sense that points to what awakening actually is.

The first sense draws lines. The second sense points beyond all lines. Both are 自界. Both are necessary.


生活里的走查

Let's walk this concept through a contemporary day. We'll track both senses.

Morning: the Abhidharma sense in your pocket

You wake up. You pick up your phone. The screen lights up: a notification from a messaging app. You tap it. You read a message. You feel something — perhaps warmth, perhaps irritation. You type a reply. You send it. You check another app. You scroll.

Now let's map this with the Abhidharma's 自界.

The visual forms on the screen belong to the *visible-form element* (色界). The sounds from a video belong to the *sound element* (聲界). The touch of the phone against your fingers belongs to the *tangible element* (觸界). The thoughts that arise as you read the message — "what does she mean by that?" — belong to the *mental-object element* (法界). The eye-consciousness that sees the screen belongs to the *eye-consciousness element* (眼識界). The mind-consciousness that interprets belongs to the *mind-consciousness element* (意識界).

Each of these has its own realm. The visible forms do not produce sound. The sound does not produce touch. The eye-consciousness does not interpret meaning — it only sees colors and shapes. The interpretation happens in the mind-consciousness, using mental objects.

Here is 自界 in its analytic sense: each element operates in its own domain. The eye does not hear. The ear does not see. The mind does not see colors; it *thinks* about colors. This may sound obvious, but the confusion is constant. When you say "I see what you mean," you are blurring the boundary: seeing is visual, meaning is mental. When you say "that sounds harsh," the harshness is not in the sound — sound is just vibration — the harshness is in the mental assessment of the sound. The sound-element does its own work (transmitting auditory information); the mind-element does its own work (judging, evaluating, reacting).

The Abhidharma's point is not pedantic. It is *liberating*. When you understand that the irritation you feel after reading a message is not in the message (the message is just visual forms) and not even in the seeing (the eye just transmits patterns), but in the *mental processing* — the interpretation, the memory, the judgment — you begin to see where your experience is actually constructed. And what is constructed can be examined. What is constructed can be loosened.

The 自界 principle — each thing in its own realm — is the first step toward seeing that *your experience is an assembly, not a given.* The message on the screen is one thing. Your reading is another. Your reaction is a third. They are not one event. They belong to different elements, different realms, different causal streams. The confusion of these realms — thinking "the message made me angry" — is precisely the confusion the Abhidharma is diagnosing.

Let's do a precise walk-through. The message arrives. What actually happens?

1. Visible forms appear on the screen — these belong to the *rūpa-dhātu* (色界), the realm of visible form. 2. Eye-consciousness arises — seeing the forms. This belongs to the *cakṣur-vijñāna-dhātu* (眼識界), the eye-consciousness element. 3. Mental processing begins — recognition, interpretation, memory, judgment. This belongs to the *mano-vijñāna-dhātu* (意識界), the mind-consciousness element, and its objects belong to the *dharma-dhātu* (法界), the mental-object element. 4. Feeling arises — pleasant, unpleasant, or neutral. This is a mental factor, operating within the mind-consciousness stream. 5. Reaction arises — anger, warmth, anxiety, relief. This, too, is a mental factor.

The message *itself* — the visible forms on the screen — is one realm. The *seeing* is another. The *interpretation* is another. The *feeling* is another. The *reaction* is another. They are distinct events, in distinct realms, with distinct causal conditions.

The common error: "The message made me angry." The Abhidharma says: the message is visible forms. Anger is a mental factor. The visible forms did not produce the anger. The anger arose in the mind-consciousness, conditioned by many factors — including your interpretation of the message, your mood, your history, your expectations. The message was the occasion, not the cause. The cause was in your own mental stream.

This is 自界 in action: each realm does its own work; do not confuse the realms.

Afternoon: the Yogācāra sense in a moment of stillness

Now the second sense. It is mid-afternoon. You are at your desk. The work is overwhelming. Deadlines, emails, meetings. You feel scattered — pulled in ten directions. You close your eyes for a moment. You take a breath. And in that breath, for a second, there is a pause. Not a *thinking* about a pause. Just the pause itself.

In that pause, something is present that is not the emails, not the deadlines, not the anxiety. It is not *produced* by the pause — it was there all along, but obscured. It is the simple, undeniable fact of awareness itself. The knowing. The presence. It has no content — or rather, it is not *about* anything. It is just... here. Unmade. Ungiven. Not earned. Not achieved.

This — in the Yogācāra sense — is a glimpse of 自界. The self-realm. The inherent nature. What Paramārtha calls 性淨法身 — the intrinsically pure dharmakāya. Not a realm you belong to, but the realm that *is* you — deeper than your thoughts, deeper than your emotions, deeper than your roles and identities.

The text says: 「如來自大功能所證,不由無因、不由他得」 — *realized by the Tathāgata's own great function; not without a cause; not obtained from another.*

In that moment of pause: the awareness is not *caused* by the pause. The pause is just the condition that allows you to notice it. The awareness was there during the emails too — it was just obscured by the content. And the awareness is not *given* to you by anyone. No one handed it to you. It is not a gift from the meditation teacher, not a download from the app, not a benefit of the retreat. It is your own. It has always been your own.

This is 自界 in its realizational sense. Not a boundary that separates, but a ground that is already there. The text says the two vehicles do not realize this and therefore have no joy (二乘無喜由不證). Why? Because they have attained cessation — but they have not recognized the *nature* of awareness itself. They have extinguished the disturbances but have not discovered the ground. The joy of the Buddhas — the five joys — comes from *realizing* the self-realm, not from extinguishing the disturbances. Extinguishing is negative; realizing is positive. Extinguishing is a removal; realizing is a discovery.

In contemporary terms: you can manage your stress, optimize your productivity, calm your nervous system — and still not discover the self-realm. The self-realm is not the calm. It is what *knows* the calm and the stress alike. It is not the peace. It is what is aware of both peace and turmoil. It is the one thing that has been present in every moment of your life — through every emotion, every thought, every sensation — and has never once been absent. That is the self-realm. Not a possession, not an achievement — but your own.

Evening: both senses together

It is evening. You are with someone you love. Or you are alone. The day is winding down. You are tired.

In this tiredness, both senses of 自界 are available.

The Abhidharma sense: your fatigue belongs to the body — the *touch element*, the *body-consciousness element*. The thoughts about the day belong to the *mind-consciousness element*. The emotions — gratitude, loneliness, satisfaction, longing — belong to the mental factors. They are distinct realms. Do not confuse them. The tiredness in your body is not the tiredness in your mind. The loneliness is not in the room; it is in the mental stream. The room is just visible forms and sounds. The loneliness is constructed — by memory, by expectation, by interpretation. It belongs to its own realm.

The Yogācāra sense: beneath all of this — beneath the tiredness, beneath the thoughts, beneath the emotions — there is the knowing. The presence. The self-realm. Not a thing among things. Not a state among states. The ground. It does not get tired. It does not get lonely. It is not satisfied or dissatisfied. It is the one who *knows* tiredness, knows loneliness, knows satisfaction. It has been there all day — all life. It is your own.

The text says: 「由見證自界得此勝能,是故生喜」 — *because one sees and realizes the self-realm, one gains this immeasurable capacity; therefore joy arises.*

Joy — not because the tiredness is gone. Joy because the tiredness is *known*. Because the one who knows the tiredness is not tired. Because the self-realm is immeasurable — not limited by the body, not limited by the mind, not limited by any state. And this is not a doctrine to believe. It is something to *see*. To realize. To come home to.


当代人为什么需要它

Why does a contemporary person — scrolling, commuting, working, worrying — need a concept as arcane as 自界?

Because contemporary life is a machine for confusing realms

Consider the average hour of a contemporary life. You are looking at a screen. On the screen are words. The words trigger emotions. The emotions trigger physical sensations. The physical sensations trigger more thoughts. The thoughts trigger more emotions. Within thirty seconds, you have cycled through visual forms, sounds, mental objects, feelings, bodily sensations, judgments, memories, and anticipations — and experienced the whole thing as *one undifferentiated blur*.

The Abhidharma's 自界 is the antidote to this blur. It says: *slow down. Distinguish. Each element does its own work.* The words on the screen are not the anger. The anger is not the tightness in your chest. The tightness is not the thought "I can't handle this." They are distinct events in distinct realms. They arise together — they condition each other — but they are not identical.

This distinction is not intellectual gymnastics. It is the foundation of *not being swept away*. When you can see that the anger is in the mind-consciousness, not in the screen, you are no longer a passive victim of the screen. When you can see that the tightness in your chest is a bodily sensation, not a verdict on your life, you can breathe. When you can see that the thought "I can't handle this" is a mental object — arising and passing — you can let it pass.

Contemporary life is engineered to blur these realms. Social media algorithms are designed to keep the blur going — to keep you unable to distinguish between information and emotion, between the screen and your life, between the content and your reaction. The 自界 principle is a form of *digital literacy* — the oldest and most profound form. It teaches you to see that the realm of the screen (visible forms, sounds) and the realm of your mind (interpretation, emotion) are distinct — and that the connection between them is not automatic, but conditional. Conditions can be examined. Conditions can be changed.

Because contemporary life is a machine for forgetting the ground

The Yogācāra sense of 自界 addresses a different problem: the contemporary crisis of *identity*. We are constantly told that we are what we do, what we have, what we look like, what others think of us. The self is constructed — by achievements, by relationships, by consumption, by social media profiles. And because it is constructed, it is fragile. One bad performance review, one broken relationship, one unflattering photo — and the constructed self collapses.

The Yogācāra's 自界 is the discovery that there is a self that is *not* constructed. Not a self in the sense of a fixed entity — but a self in the sense of *the ground of awareness that has been present from the beginning*. The Tathāgata-nature. The intrinsically pure dharmakāya. It is not built. It is not earned. It is not given. It is realized.

Contemporary psychology has a partial version of this: the idea of the "observing self" or "witnessing awareness." But the Yogācāra goes further. It says this witnessing awareness is not just a psychological function — it is the very nature of awakening. It is what a Buddha has realized. It is the cause of the five joys. It is the ground of liberation.

The contemporary person needs this because the contemporary self is exhausted. Constructed identities require constant maintenance. The performance never ends. The 自界 offers a different possibility: *the identity that requires no maintenance, because it was never constructed.* Not an identity in the ordinary sense — not a role, not a label — but a presence. A knowing. Something that is your own in a way that nothing else is your own.

The text says: 「不由他得」 — *not obtained from another.* This is crucial for contemporary people who are drowning in self-help. The self-realm is not something you can buy, download, or receive from a guru. It is not a product. It is not a technique. It is your own — always has been, always will be. The teachers, the techniques, the books — they can *point*. They cannot *give*. The realization is yours alone. This is not discouraging. It is liberating. It means the one thing that matters most is the one thing that cannot be taken from you.

Because contemporary life is a machine for deferring joy

The five joys arise from realizing the self-realm. They are not dependent on conditions. They do not require the right job, the right relationship, the right body, the right bank balance. They arise from *seeing what is already there*.

Contemporary life is organized around the opposite assumption: joy is conditional. It comes after the promotion, after the vacation, after the renovation, after the children are settled. Joy is perpetually deferred. The 自界 teaching says: the deepest joy — the joy of realizing your own nature — is available now, because it is not caused by conditions. It is caused by realization. And realization is not a future event. It is a present possibility.

This is not a denial of the difficulty of life. The self-realm does not remove suffering. It *knows* suffering. And in that knowing — in that unconditioned presence — there is a joy that is not the absence of suffering but the *freedom within* suffering. The text says the first joy arises "because one sees the self-realm and gains immeasurable capacity" (由見證自界得此勝能). The capacity is immeasurable — not because suffering disappears, but because the one who knows suffering is not limited by suffering. The knowing is bigger than the known. The presence is deeper than the pain.


常见误读与澄清

Misreading 1: "自界" means "my personal bubble"

A common contemporary instinct is to hear "自界" and think: my own space, my boundaries, my comfort zone. The phrase "self-realm" sounds like a justification for retreat — "I need to stay in my own realm; don't intrude on my boundaries."

This is a misunderstanding — at least in the Buddhist context. In the Abhidharma sense, 自界 is not about *my* realm as opposed to *yours*. It is about *each dharma's* realm. The eye belongs to the eye-realm; sound belongs to the sound-realm. This is not a prescription for isolation. It is a description of how things actually work. And the point of the description is not to keep things separate — it is to understand how they *relate* without being *confused*. The eye and sound work together in vision, but they do not merge. The Abhidharma's 自界 is the condition for *precise relationship*, not for separation.

In the Yogācāra sense, 自界 is even less like a personal bubble. It is the *universal* ground — the Tathāgata-nature shared by all Buddhas. The "self" in "self-realm" is not the individual self. It is the *self-nature* of reality itself. It is what all Buddhas have realized — not what separates one Buddha from another, but what unites them. The text says the first joy arises because one sees that one's own capacity is immeasurable — equal to all Buddhas. This is the opposite of a bubble. It is the dissolution of the bubble.

Misreading 2: "自界" is the same as "自性" (svabhāva)

The terms are related but not identical. 自性 (svabhāva) means "own-nature" — the intrinsic characteristic of a thing. 自界 (svadhātu) means "own-realm" — the class or domain to which a thing belongs. In the Abhidharma, they are connected: a thing belongs to its own realm *because* it has its own nature. But they are not the same concept.

The Kośa's principle 「攝自性非餘」 — *include only the own-nature, not the other* — uses 自性, not 自界. The principle explains *why* a thing is included in its own class: because its nature is distinct from other natures. 自界 is the *result* of this: because the nature is distinct, the realm is distinct.

The difference matters because 自性 is a more abstract concept — it can be discussed independently of any particular classification. 自界 is always *in relation to* a classification — it answers the question "which realm?" The Yogācāra usage blurs this distinction somewhat: 自界 as the Tathāgata-nature is very close to 自性 in the sense of ultimate nature. But in the Abhidharma, the two terms have distinct functions.

Misreading 3: The Yogācāra 自界 is a "self" in the ordinary sense

When Paramārtha's text says 自界 is the Tathāgata-nature, the intrinsically pure dharmakāya, it is easy to hear this as: there is a permanent, unchanging self — my true self — and I need to find it. This is a profound misunderstanding.

The Buddhist tradition universally denies the existence of an eternal, unchanging self (ātman). The Yogācāra's 自界 is not a return to ātman. It is the *nature of awareness itself* — not a thing, not an entity, but the ground of knowing. It is described in negative terms: it is not conditioned, not constructed, not acquired, not given. It is not a "what." It is not a "who." It is the *suchness* of mind — the way things are when not distorted by grasping and aversion.

The text's emphasis on 「不由他得」 — *not obtained from another* — could suggest a self that is independent and self-sufficient. But the point is not that there is a self that stands alone. The point is that *awakening cannot be received as a gift*. It must be realized. The "self" in "self-realm" is the *self-nature of awakening* — its inherent reality — not a personal self.

Misreading 4: The two senses of 自界 are contradictory

One text says 自界 means "the realm a conditioned thing belongs to." Another says 自界 means "the Tathāgata's inherent nature." These seem to contradict. But they are two levels of analysis — not two competing claims.

The Abhidharma analyzes *conditioned* reality — the world of experience as it appears, structured into elements, realms, functions. At this level, 自界 marks the boundaries that make analysis possible.

The Yogācāra points to *ultimate* reality — the ground of awakening that is unconditioned, unconstructed, intrinsically pure. At this level, 自界 marks the *absence* of boundaries — the nature that is not confined to any realm, because it is the nature of reality itself.

The relationship is like the relationship between a map and the territory. The Abhidharma provides the map — the boundaries, the classifications, the precise distinctions. The Yogācāra points to the territory — what is actually there, beyond all maps. The map is not the territory. But without the map, you cannot find the territory. Without the Abhidharma's precise analysis, you will confuse realms — you will think the screen made you angry, that the body is the self, that thoughts are reality. And with that confusion, you will never find the ground. The map's distinctions are the conditions for the territory's discovery.

The Kośa says: 「有繫自界得,無繫得通四」 — the bound is acquired from its own realm; the unbound pervades all four. This is the whole structure in miniature. The conditioned world operates by boundaries. The unconditioned — nirvāṇa, the dharmakāya — is not bound by any realm. It pervades all. But you can only discover the pervading through the precise understanding of the bounded. The 自界 of the Abhidharma is the gateway to the 自界 of the Yogācāra. The map leads to the territory. The distinctions lead to the ground.


Conclusion: The Boundary and the Ground

自界 is a single word with two directions. One direction is analytic: it draws the lines that make experience intelligible. The other is realizational: it points to the ground that has no lines because it is the very nature of awareness itself.

Both directions are necessary. Without the analytic sense, you will be lost in the blur of contemporary life — unable to distinguish the screen from your reaction, the body from the mind, the thought from the thinker. With the analytic sense, you begin to see: each thing in its own realm, each element doing its own work. And in that clarity, something else becomes visible — the one who sees the realms, the knowing that is not itself a realm.

That knowing is the Yogācāra's 自界. It is not a boundary. It is the ground. It is not a box. It is the space in which all boxes appear. It is not acquired. It is realized. It is not given by another. It is your own — in the deepest sense of "own" there is.

The Kośa's 自界 is precise. The Yogācāra's 自界 is intimate. Both are necessary. The precision is the path. The intimacy is the destination. Or rather — the intimacy was never not there. The precision is just what allows you to see it.

「二乘無喜由不證」 — the two vehicles have no joy because they do not realize this. The joy is not in the map. The joy is in the territory. But without the map, you will never find the territory. And with the map — if you use it well — you will discover that the territory was never lost. It was only obscured.

自界. The realm that is your own. The ground that is your own. May you find it — or rather, may you realize that it has always been here.

Canonical EntryAI-generated

定义与核心要义

「自界」,梵文 svadhātu,为佛教重要概念之一。汉译佛典中,「自界」一词的含义随部派与论典语境而有不同侧重:于毘曇部论中,特指一法自身所繫、所屬的界类范围,强调法之归摄以自性为限、不杂他性;于瑜伽部论释中,则指如来自具之法界,即性净法身、如来之自性,为如来果德之根本所依。

主要阐述

《阿毘達磨俱舍論》对「自界」之使用,主要从法的归属性与各界的自性功能两方面展开。论中以「有繫自界得,无繫得通四」标示「自界」之基本义:有繫法之得限定于其自身所繫属之界,故称「自界得」;无繫法之得则通于四界。本论另立总摄原则「摄自性非余,以离他性故」,即一切法虽可由蕴、处、界加以总摄,但只摄取法之自性而非他性,理由在于一法离于他法之性。在十八界的具体阐明中,本论反复以「自」字标示各界各自对应的功能与境域,如论同分及彼同分时以「作自业、不作自业」为分判;眼界乃至意界「各於自境应说自用」,色、声、香、味、触等「各对自根应说自用」,表明各界依自业、自境、自根与自用分别安立,而非笼统混同。

《攝大乘論釋(真諦譯)》对「自界」之阐释,围绕「证自界」与如来五喜之因果关系而展开。论释明确指出「以证自界为因,五喜为果」,将「自界」置于因位,为如来果德之根本所依;并界定其内涵为「界是如来性,即性净法身」。论释强调此证乃「如来自大功能所证,不由无因、不由他得,故言证自界」,凸顯「自」字之双重义涵:一者证悟由如来自身之大功能发起;二者非无因自然而有,亦非由他得,故证自界为如来之自觉、自证,非他缘所成。二乘因不证此界,故无五喜之受用,五喜之果唯属已证自界之如来。论释进一步解說五喜之五因,其中前二因直接以「证自界」为所依:第一因「自能无量故生喜」由见证自界得无量胜能而生喜;第二因「作事立故生喜」由见证自界正事成立而生喜;第三因「法美味故生喜」、第四因「欲德成故生喜」,虽未明文重出「证自界」字样,然皆为证自界后如来境界之自然展开,一以同一法身为味,一以所欲得成、功德圆满为相。

不同部类与译本的表述差异

「自界」在所引两部论典中,内涵重心明显不同:

一、《阿毘達磨俱舍論》(毘曇部)侧重于具体法之归属性与各界的自性功能,以「自界得」「自性」「自业」「自境」「自根」「自用」一系术语标示,核心在划定各法所属界域之界限,谨守自性、不混他性。

二、《攝大乘論釋》(真諦譯,属瑜伽部)则以「自界」指称如来本具之法身自性,以「如来性」「性净法身」二语注释「界」之实义,以「证自界」一语贯串始终。此处「自」字重心在于如来之自体自觉、自大功能所证、非由他得。

此二部类之差异,并非译本异译所致,而是部派与论典思想脉络不同:在分析名相层面,「自界」指一法所繫的界域范围;在修行果证层面,「自界」则指如来自具之法界。后者带瑜伽唯识如来藏思想之色彩,与俱舍论之部派法相分析属不同路向。本释以真諦译本为据,未见玄奘译本之异译对照。

与相关概念的关系

就「自界」与「界」(dhātu)之关系而言,「界」本为分类之通名,如十八界、六界等;而「自界」则限定一法所归属之特定界域,离于他界,与「他界」相对,强调归属于自身所系之界。与「自性」之概念密切相关:俱舍论以「摄自性非余」标示一法之限定归摄,与「自界」之限制义一致。与「如来性」「性净法身」之关系,则如摄大乘论释所明:「界是如来性,即性净法身」,自界即如来本具之自性法身,为五喜之因。就「证自界」与「五喜」之关系而言,证自界为因、五喜为果,二乘以不证自界故毕竟无五喜。

代表性原文引用

1. 《阿毘達磨俱舍論》:卷中所立「有繫自界得,无繫得通四」,标示有繫法之得限定于自界。 2. 《阿毘達磨俱舍論》:「摄自性非余,以离他性故。」此总摄原则标示一法之归摄只限自性、不杂他性。 3. 《阿毘達磨俱舍論》:说同分「作自业」,说彼同分「不作自业」;眼界乃至意界「各於自境应说自用」,色、声、香、味、触等「各对自根应说自用」,以自业、自境、自根、自用分别安立各界。 4. 《攝大乘論釋(真諦譯)》:偈颂「二乘无喜由不证」,标示二乘不证自界故无五喜。 5. 《攝大乘論釋(真諦譯)》:「以证自界为因,五喜为果」;释「界」为「如来性,即性净法身」;强调「如来自大功能所证,不由无因、不由他得,故言证自界」;又释「二乘不证此界,故无五喜」。 6. 《攝大乘論釋(真諦譯)》:解五喜之前二因,「由见证自界得此胜能,是故生喜」;「若诸佛已证自界,则成立此正事。由见证自界作正事立,是故生喜」。

By SutraAI-generated

阿毘達磨俱舍論T1558 · 毘曇部

《阿毘達磨俱舍論》直接使用「自界」一詞,其核心表述是「有繫自界得,無繫得通四」。此處以「有繫」與「無繫」相對:有繫法之得限定於其自身所繫屬的界,故稱「自界得」;無繫法之得則不作同樣限定,而說「通四」。論文由此呈現「自界」的基本義,即一法自身所屬、所繫的界類範圍,而不是別界或他界。就多譯名歸一而言,本論在此所採用的術語形式正是「自界」,並以「有繫自界得」的緊密語式出現。

本論對法之歸屬範圍另有一項可與「自界」相互發明的總攝原則:「攝自性非餘,以離他性故。」一切法雖可由蘊、處、界加以總攝,但攝取的是法的自性,而非其他法;理由在於一法離於他法之性。這段沒有另立「自界」名稱,卻清楚標明判定歸攝時須守住自身之性,不把他性混入。因而本論所說的「自界」,可依原文理解為依法自身的界屬而成立,其界限與「非餘」「離他性」的表述一致。

在十八界的說明中,本論亦反覆採用「自」字標示各界各自對應的功能與境域。論述同分及彼同分時,以「作自業、不作自業」為分判:能作自身之業者名同分,不能作者名彼同分;又說眼界乃至意界「各於自境應說自用」,色、聲、香、味、觸等亦「各對自根應說自用」。這顯示各界並非籠統混同,而是依自業、自境、自根、自用分別安立。原文還辨明眼等根界與色等境界在共、不共及依相續建立方面的差異,仍以各界自身的作用關係為準。

綜合而言,《阿毘達磨俱舍論》對「自界」的論述重點,不在另作抽象定義,而在具體分類語句中確立界屬限制:有繫法之得屬於自界;法的總攝只攝自性而不攝他性;各界的運作則依自業、自境、自根與自用加以說明。其特有而應記錄的原文用詞包括「自界得」「自性」「自業」「自境」「自根」「自用」,共同凸顯一法依自身所屬領域及自身功能受判定的表述方式。

攝大乘論釋(真諦譯)T1595 · 瑜伽部

本論釋對「自界」一詞的闡釋,主要圍繞「證自界」與如來「五喜」之因果關係而展開。

一、核心定義:以「證自界」為因,五喜為果

論中明確指出「以證自界為因,五喜為果」,將「自界」置於因位,為如來果德之根本所依。釋文隨即界定其內涵:「界是如來性,即性淨法身」。可知本論釋以「如來性」與「性淨法身」二語詮解「界」之實義——自界並非外在疆域之分野,而是法身之本性、如來之自性。

二、證得之特質:自大功能所證

釋文強調「如來自大功能所證,不由無因、不由他得,故言證自界」。此處凸顯「自」字之雙重義涵:其一,證悟由如來自身之大功能(非外力)發起;其二,並非「無因」自然而有,亦「不由他得」,非由他佛或他法所授。故證自界實為如來之自覺、自證,非他緣所成。

三、二乘不證:與佛果之差別

偈頌明示「二乘無喜由不證」,釋文對應解釋「二乘不證此界,故無五喜」。本論以「證自界」與「二乘不證」對舉,區隔佛與二乘之果德差異:五喜之果唯屬已證自界之如來,二乘以不證此界故,畢竟無此五喜之受用。

四、證自界與五喜的具體連結

釋文進一步解說五喜之五因,其中前二因直接以「證自界」為所依:

第一因「自能無量故生喜」:「由見證自界得此勝能,是故生喜」——諸佛同一法身為體,一佛之勝能等同一切佛之勝能;正由證自界故,得此無量勝能而生喜。

第二因「作事立故生喜」:「若諸佛已證自界,則成立此正事。由見證自界作正事立,是故生喜」——一佛所作利益眾生之正事,即一切佛之正事;此正事之成立,以已證自界為前提。

第三因「法美味故生喜」、第四因「欲德成故生喜」,雖未明文重出「證自界」字樣,然皆為證自界後如來境界之自然展開:一以同一法身為味,一以所欲得成、功德圓滿為相。

五、術語形式

本論釋於詮解「自界」時,以「如來性」、「性淨法身」二詞為其內涵註腳,未見其他異譯;對二乘則用「二乘」一語概括聲聞、緣覺。通篇以「證自界」一語貫串始終,構成「自界」一詞在本論釋中之核心術語形式。

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