Dharma · AI Companion

畢竟空

atyantaśūnyatā

一切法究竟无自性的空。AI-generated

Type ViewDifficulty AdvancedTruth-level span II · emptiness ⇢ IV · beyond wordsInitial AI estimate · evolves with use

初立第二重(般若空义之极成,「空亦复空」仍属破自性的论证,本位第二重);究竟第四重〔《涅槃经》「第一义空名为佛性」、天台以毕竟空为中道实相,读为离言了义〕〔中观应成:毕竟空即究竟,不须再上安一重〕。

A Contemporary ReadingAI-generated

What This Concept Is Saying

In the vast landscape of Mahāyāna Buddhism, “Ultimate Emptiness” (*Atyanta-śūnyatā* / 畢竟空) is not a void of nothingness, nor is it a pessimistic negation of reality. One-sentence definition: *Ultimate Emptiness refers to the natural, ultimate reality of all phenomena (*dharmas*), characterized by the complete unobtainability of inherent self-existence (*svabhāva*), being neither annihilated nor eternal, and intrinsically tranquil.*

The canonical scriptures delineate this concept with precision: * In the *Maha Prajñāpāramitā Sūtra* (*Mohe Bore Baoluomi Jing* / 《摩訶般若波羅蜜經》), it is defined: *“‘Ultimate’ means that all phenomena are ultimately unobtainable (*jijuai bukede* / 畢竟不可得), because they are neither eternal nor destroyed (*feiduan feimie* / 非常非滅). Why? Because its nature is spontaneously such (*xing zier* / 性自爾). This is called Ultimate Emptiness.”* * In the *Mahāsaṃnipāta Sūtra* (*Dafangdeng Daji Jing* / 《大方等大集經》), it is reiterated: *“‘Ultimate’ means that all phenomena are to the very end unobtainable (*zhijing bukede* / 至竟不可得).”* Its core characteristics are that it cannot be accumulated, cannot be destroyed, and cannot be seized (*feijiju, bukuhuai, bukequ* / 非積聚、不可壞、不可取).

To understand Ultimate Emptiness, one must grasp its position in the complete path to liberation (*jiehuodao* / 解脫道). In early Buddhist teachings, wisdom focuses heavily on seeing through the "self" (*anātman* / 無我) to dismantle personal suffering. However, Mahāyāna Prajñāpāramitā teachings take a further, uncompromising leap: not only is the subjective self empty, but all phenomena—including physical form, psychological states, the laws of causality, spiritual stages, and even the concept of emptiness itself—are empty of inherent, independent self-nature.

The sūtras illuminate this thoroughgoing nature of Ultimate Emptiness across several crucial dimensions:

1. The Ultimate Reality of All Phenomena and Intrinsic Tranquility In the *Mahāratnakūṭa Sūtra* (*Dabaoji Jing* / 《大寶積經》), Mañjuśrī Bodhisattva points out that it is precisely upon "Ultimate Emptiness" that all spiritual stages—such as the stages of Hearers (*Śrāvaka* / 聲聞地), Solitary Buddhas (*Pratyekabuddha* / 辟支佛地), Bodhisattvas (*Bodhisattva-bhūmi* / 菩薩地), and Buddhas (*Buddha-bhūmi* / 佛地)—are established. Yet emptiness itself carries no distinctions, just as space (*ākāśa* / 虛空) is designated as East or South in conventional language, but space itself remains undivided. Phenomena are intrinsically pure, uncreated, and abiding nowhere (*wuzhu wuqi* / 無住無起). The classical scriptures consistently use Space/Sky (*ākāśa* / 虛空) as the core metaphor. Just as space has no physical entity, cannot be grasped, has no direction of travel (*wuyousuoxing* / 無有所行), and remains untouched by clouds or clear weather, all phenomena are fundamentally unconditioned (*asamskṛta* / 無為), unarisen (*anutpāda* / 無生), and beyond verbal expression (*ineffable / bukeshua* / 無言). Because they are empty, not even the smallest solid dharma (*shao fa* / 少法) can be rigidly "attained" or owned.

2. **Essential Emptiness (*Tixing Kong* / 體性空) and the Law of Karma** A critical nuance in the *Mahāratnakūṭa Sūtra* is the concept of "Essential Emptiness" (*Tixing Kong* / 體性空). The sūtra systematically lists consciousness, conditions (*pratyaya* / 緣), karma (*karma* / 業), death, rebirth, the worldly realm, and even Nirvāṇa, pointing out that their intrinsic nature is empty. Under this realization, cause and effect operate fluently, yet *“there is no ultimate creator of karma, nor any ultimate receiver of retribution”* (*wuyou zuoyezhe, wuyou shoubaozhe* / 無有作業者、無有受報者). Cause and effect occur dynamically as dependent origination (*pratītyasamutpāda* / 因緣生滅), but lack a fixed, static entity behind them. They exist as conventional designations (*suisushiyou* / 隨世俗有), not as absolute self-entities (*diyiyi* / 第一義).

3. **Integrating the Bodhisattva Practice and the Six Perfections (*Ṣaṭ-pāramitā* / 六波羅蜜)** Far from leading to passive indifference, Ultimate Emptiness is the engine of boundless compassionate action. In the *Maha Prajñāpāramitā Sūtra*, every perfection is perfected *because* of Ultimate Emptiness: * Generosity (*Dāna-pāramitā* / 檀那波羅蜜): Practiced without stinginess, because the giver, receiver, and gift are all unobtainable (*sanlun tigaokong* / 三輪體空). * Precepts/Ethics (*Śīla-pāramitā* / 尸羅波羅蜜): Practiced without rigid attachment to guilt or innocence, abiding in non-duality. * Patience (*Kṣānti-pāramitā* / 羼提波羅蜜): Practiced without anger. When facing harm, the Bodhisattva contemplates: *"Who is cursing me? Who is receiving it?"* and taps into the ultimate reality where no fixed entity exists. * Diligence (*Vīrya-pāramitā* / 毗梨耶波羅蜜): Practiced tirelessly in body and mind, unburdened by egoistic fatigue. * Meditation (*Dhyāna-pāramitā* / 禪那波羅蜜): Practiced without distraction or attachment to pleasant meditative states. * Wisdom (*Prajñā-pāramitā* / 般若波羅蜜): Practiced without generating delusion or mental clinging.

4. The Ultimate Unity of Emptiness, Awakening, and Nirvāṇa The *Mahāsaṃnipāta Sūtra* explicitly connects Ultimate Emptiness with Bodhi (Awakening) and Nirvāṇa: *"Emptiness and Bodhi are of one suchness; emptiness and Bodhi are one, not two."* Because the ultimate nature of reality is empty and limitless, Nirvāṇa is inexhaustible (*wujin* / 無盡), and all phenomena are fundamentally equal to Nirvāṇa (*yieqiefa yu nirvana deng* / 一切法與涅槃等).


Walkthrough in Daily Life

To bring Ultimate Emptiness down from philosophical abstractions into the reality of everyday existence, let us walk through several modern scenarios—mapping our experience against the actual canonical definition of Five Aggregates (*Pañca-skandha* / 五陰/五蘊), Twelve Sense Bases (*Dvādaśāyatana* / 十二入/十二處), and Eighteen Realms (*Aṣṭādaśa-dhātavaḥ* / 十八界).

Scenario 1: The Evening Rush Hour & Phone Scrolling

Imagine you are commuting home on a crowded subway train after a stressful workday. You pull out your smartphone and scroll through social media.

* Form/Physicality (*Rūpa* / 色/色陰): The physical body squeezed against strangers, the blue light emitted by the screen, the optical nerves receiving light waves. * Sensation/Feeling (*Vedanā* / 受/受陰): The physical soreness in your lower back, the subtle sting of envy seeing a colleague’s vacation post, or a quick hit of dopamine from a social media notification. * Perception/Recognition (*Saṃjñā* / 想/想陰): The cognitive tagging—labeling that post as "they are succeeding, I am failing," or identifying the person standing next to you as "an annoying intruder in my space." * Volitional Formations/Impulses (*Saṃskāra* / 行/行陰): The underlying psychological drive to keep swiping, the impulse to buy something online to soothe anxiety, or the defensive mental contraction against the noise. * Consciousness (*Vijñāna* / 識/識陰): The fundamental awareness through eye-consciousness (*yanshi* / 眼識) and mind-consciousness (*yishi* / 意識) registering these fleeting phenomena.

Applying Ultimate Emptiness: When we do not understand Ultimate Emptiness, we treat this entire complex as a solid, permanent entity: *"My miserable life, my failing career, this terrible commute."*

When we observe this through Ultimate Emptiness, we notice that every single link in this chain is "spontaneously such" (*xing zier* / 性自爾) and "unobtainable" (*bukede* / 不可得). Where is the solid, lasting "stress" when you look for its essence? The light waves on the screen dissolve into flickering pixels; the emotional pang of envy vanishes the moment attention shifts; the physical sensation in the spine is merely changing nerve signals.

Common mapping mistake: People often think "Emptiness" means pretending the crowd on the subway isn't there, or suppressing their fatigue. But canonical Ultimate Emptiness does not destroy the conventional phenomenon (*feiduan feimie* / 非常非滅). The crowd is physically there, the fatigue is felt, yet none of it possesses an unchangeable, independent core. You ride the train, feel the tiredness, yet remain completely unanchored to a story of self-pity.

Scenario 2: Overtime, Performance Reviews, and Workplace Conflict

You are sitting in a conference room during an intense performance review. Your manager critiques your project, calling it "insufficiently detailed."

* The Trap: Your mind immediately constructs a solid narrative: *"I worked 70 hours a week for this! My boss hates me. My career is ruined."* Here, you have solidified three things: an absolute "Self" (the victim), an absolute "Other" (the hostile boss), and an absolute "Action" (the insult).

* The Walkthrough via Ultimate Emptiness: The Bodhisattva practice of Patience (*Kṣānti*) in the sūtras asks: *"Who is cursing me? Who is receiving it?"* 1. Deconstructing the Sound: Sound waves hit the eardrum (Sense Base / 十二入). Mind-consciousness decodes the language. 2. Deconstructing the Concept: "Insufficiently detailed" is a subjective conceptual tag (*Saṃjñā* / 想), dependent on corporate metrics, manager mood, and market expectations. 3. Deconstructing the Self: Where is the "I" that is being insulted? Is it in the ears? In the brain? In yesterday's overtime work?

Because the entire event is empty of an inherent self-nature (*tixing kong* / 體性空), the criticism has nowhere to land. It passes through you like wind through open space. Yet, because emptiness is *not* passive apathy, you still take notes, adjust the project, and optimize the details with complete clarity—unburdened by emotional toxicity or egoic defense.

Scenario 3: Parenting and Intimate Relationships

You are dealing with a child throwing a temper tantrum on the living room floor, or arguing with a spouse over household finances.

* The Mapping: We often demand that our loved ones fit into our rigid, permanent expectations ("You *should* be obedient," "You *should* understand me"). When they fail, we suffer. * Ultimate Emptiness in Action: Recognizing that your child’s identity, your spouse’s mood, and your own expectations are all dependently arisen conditions—flowing, dynamic, and empty of fixed essence. When you look at your child through Ultimate Emptiness, you do not see a "bad child," but a temporary storm of biological fatigue, emotional dysregulation, and environmental triggers. Because you realize no static, malevolent essence exists in them, deep patience and unconditioned compassion naturally arise.


Why Contemporary People Need It

Contemporary human existence is characterized by an unprecedented level of hyper-solidification. We live in a culture driven by algorithms, metrics, personal branding, and relentless quantification.

1. The Anxiety of "Self-Optimization" and Digital Identity Modern culture constantly urges us to build, solidify, and monetize our identities. We are curated profiles, key performance indicators (KPIs), credit scores, and follower counts. This creates a chronic state of exhaustion, because maintaining a "solid self" in a rapidly changing world requires immense energy. Ultimate Emptiness acts as the ultimate psychological relief valve. It reminds us that our self-image, our failures, and our social statuses are non-static, unobtainable constructs (*bukede* / 不可得). You do not need to "fix" or "optimize" a phantom.

2. Algorithm-Driven Polarizations and Mental Contractions Modern information feeds are designed to outrage us by solidifying binary oppositions: Us vs. Them, Right vs. Wrong, Success vs. Failure. Ultimate Emptiness cuts through binary traps. By revealing that both sides of a duality lack independent, inherent reality (*feijiju, bukuhuai* / 非積聚、不可壞), it liberates the mind from reactive outrage, allowing contemporary people to act with nuanced wisdom rather than impulsive anger.

3. Interfacing with Contemporary Science and Artificial Intelligence Consider contemporary parallels: * Neuroscience: Modern brain research shows that there is no central "command center" or fixed "homunculus" inside the human brain; what we call the "self" is an emergent, real-time narrative generated by interconnected neural networks. * Quantum Field Theory: Fundamental physics suggests that particles do not exist as autonomous, hard little billard balls; rather, they are localized excitations of underlying quantum fields, existing purely in relational probabilities. * AI and Generative Models: Large language models produce complex, context-rich responses without a central, persistent subjective soul—showing that vast complexity can arise purely out of relational probabilistic nodes.

*Crucial Caveat & Limitation*: While these scientific concepts provide helpful modern metaphors, they are not identical to Ultimate Emptiness, nor does science "prove" Buddhism. Physics and neuroscience operate within the realm of empirical, measurable phenomena (conventional truth / *saṃvṛti-satya*). Ultimate Emptiness is an experiential, non-dual realization (*paramārtha-satya* / 第一義諦) that transcends empirical measurement and conceptual framing altogether. Science studies the rules of the illusion; Ultimate Emptiness recognizes the intrinsic, uncreated nature of reality itself.


Common Misreadings and Clarifications

Because Ultimate Emptiness is so radical, it has been frequently misunderstood throughout history and remains deeply misunderstood today.

Misreading 1: Mistaking Emptiness for Nihilism (*Duanmie Kong* / 斷滅空)

* The Error: Thinking that because all things are empty, nothing matters, moral responsibility does not exist, actions have no consequences, and life is a meaningless void. * The Clarification: Canonical sūtras explicitly state that Ultimate Emptiness is *"neither eternal nor destroyed"* (*feiduan feimie* / 非常非滅). The *Mahāratnakūṭa Sūtra* stresses that under Essential Emptiness (*tixing kong* / 體性空), cause and effect, karma, and retribution remain completely intact on the conventional level (*butuai yieguo* / 不壞業果). Emptiness does not erase conventional cause and effect; rather, emptiness is the very reason cause and effect can function. If things had fixed, unchangeable self-nature (*svabhāva*), seed could never transform into a sprout, a bad habit could never be corrected, and a suffering human could never attain Awakening.

Misreading 2: Mistaking Emptiness for Mental Blankness or Emotional Numbness

* The Error: Believing that "realizing emptiness" means entering a state of emotional dissociation, where one feels no love, no joy, no sadness, and becomes as cold and unresponsive as a stone. * The Clarification: Emptiness is compared in the sūtras to Space/Sky (*ākāśa* / 虛空). Space does not reject clouds, rain, sunshine, or birds; it gives them the absolute freedom to appear, transform, and pass away without space itself being bruised or stained. Realizing Ultimate Emptiness brings profound emotional flexibility and boundless warmth (*karuṇā* / 大悲). Because a Bodhisattva sees that all beings are empty of fixed boundaries, the artificial wall between "me" and "you" collapses, giving birth to effortless, unselfish compassion.

Misreading 3: Emptiness as a "Thing" to be Possessed or Achieved

* The Error: Treating "Emptiness" as a higher, mystical object or spiritual state that one can "gain," "reach," or "own" (*"I have attained emptiness, but you haven't"*). * The Clarification: The *Maha Prajñāpāramitā Sūtra* warns against grasping at emptiness, introducing the concept of the "Emptiness of Emptiness" (*Śūnyatā-śūnyatā* / 空空). Emptiness is not a place, a subatomic particle, or a divine realm. As the sūtra puts it: *“In Ultimate Emptiness, there is no Hearer stage, no Solitary Buddha stage, no Bodhisattva stage, and no Buddha stage.”* Emptiness is simply the deconstructive insight that clears away all conceptual grasping—including the concept of "emptiness" itself. Once the fever of clinging subsides, the natural, uncreated reality (*xing zier* / 性自爾) shines forth effortlessly.

Canonical EntryAI-generated

一、定义与核心要义

「毕竟空」(atyanta-śūnyatā)是佛教大乘经典中阐释诸法实相的核心概念,指一切诸法究竟不可得、自性空寂的本然状态。在《摩诃般若波罗蜜经》中,对其给出了明确的定义:“毕竟名诸法毕竟不可得,非常非灭故。何以故?性自尔。是名毕营空。” 这表明毕竟空是指诸法自性不可得,非断非常、非生非灭,是“性自尔”的自然实相。与此相呼应,《大方等大集经》亦定义道:“毕竟名诸法至竟不可得”。其核心特征表现为“非积聚、不可坏、不可取”,而其成立的根本依据同样在于“诸法性尔”。这种“至竟不可得”的性质,揭示了诸法彻底空寂、无所依凭的本然状态。

二、主要阐述

各部类经典从不同角度对毕竟空的内涵进行了深入的阐述,主要体现在以下几个维度:

1. 诸法实相与空寂本质 在《大宝积经》中,毕竟空被视为建立一切法的基础。文殊师利菩萨指出,正是依于“一切法毕竟空中”,方能建立声闻地、辟支佛地、菩萨地与佛地等种种诸地之相,而空性本身并无任何差别,如同十方虚空虽有东方、南方等言说差别,但虚空本身并无异致。一切诸法的本性皆空,自性无性,无相且清净,非由染净所建立,具有“无住无起、无所建立、本性清净”的特征。 同时,经典大量使用“虚空”作为核心比喻。一切诸法的本性自性犹如虚空,其量难得,且“无有所行”。因为虚空无有实体,故说为“空”;在真胜义中,诸法是无言的彼岸,属于“不可说法印”,无法通过语言文字来获得。因此,一切诸法实际上是“无为、无生、无言、是空”,既然是空,便无有少法可以被证得。 此外,《大方等大集经》中引入了“毕竟不出”的表述,并解释“不近不远是毕竟不出”,而“不近不远”即是“虚空”,若能“见诸法如虚空者是名平等”。

2. 体性空与因果业报 《大宝积经》对“体性空”进行了细致的分类与辨析,指出“世间体性自空寂”,并具体列举了“后识”、“缘”、“业”、“死”、“初识”、“受生”、“世间”、“涅槃”、“起”、“坏”等,指出这些名相皆是“体性空”。在这种体性空的实相下,因缘生灭、业报死生皆无所从来亦无所至,虽然作业果报不失坏,但实际上“无有作业者、无有受报者”,这一切“但随世俗有,非第一义”。

3. 菩萨修行与六波罗蜜的融通 在《摩诃般若波罗蜜经》中,毕竟空与菩萨的修行实践紧密结合。菩萨修行六波罗蜜以净萨婆若道,皆因“毕竟空”:檀那波罗蜜因毕竟空而不生悭心;尸罗波罗蜜因毕竟空而罪不罪不着;羼提波罗蜜因毕竟空而不瞋;毘梨耶波罗蜜因毕竟空而身心精进不懈怠;禅那波罗蜜因毕竟空而不乱不味;般若波罗蜜因毕竟空而不生痴心。在毕竟空中,无来无去、无施无受、非戒非犯,菩萨不对此作二元分别。菩萨布施时,亦了达施者、受者、所施物皆不可得,因“毕竟空故,内空、外空……自相空故”。此外,“离波罗蜜是般若波罗蜜”,亦是因为“毕竟空故”。

4. 菩萨实践中的具体体现 菩萨在行持般若波罗蜜时,其种种实践皆以毕竟空为依归: - 断除分别想:菩萨行般若波罗蜜时,能如佛一般断除一切分别想,其根本原因在于“毕竟空故”。 - 修持忍辱:当菩萨面临众生加害时,能思惟“骂我者谁?谁有受者?”,契入“毕竟空、无法、无众生”的诸法实性。 - 住空说法与方便度生:菩萨住于“毕竟空、无始空”中为众生说法,开示五阴、十二入、十八界皆空无所有,如梦幻泡影。然而,菩萨虽深知“诸法无所有性,毕竟空、无始空”,却能以方便力分别诸法(善恶、有漏无漏、有为无为),引导并安置众生于圣无漏法与涅槃中。 - 显现毕竟净:我无边故色等五阴净,皆因“毕竟空、无始空故”,展现了毕竟空与毕竟净的内在统一。 - 示现世间毕竟空:般若波罗蜜能向世间示现“毕竟空”,即示现从五阴世间乃至一切种智世间,皆是毕竟空寂。

三、不同部类与译本的表述差异

在不同部类的经典中,对于毕竟空及相关法相的表述存在明显的术语和译词形式差异:

1. “五蕴”与“五阴”: - 《摩诃般若波罗蜜经》(般若部)与《大方等大集经》(大集部)皆使用了特定的时代译词,称“五蕴”为“五阴”(如《摩诃般若波罗蜜经》中“示五阴世间毕竟空”,或直接列出“色、受想行识”;《大方等大集经》中“法名五阴,五阴空”、“现在诸阴,同虚空相”)。

2. “十二处”与“十二入”: - 《摩诃般若波罗蜜经》称“十二处”为“十二入”(如“十二入、十八界空无所有”)。

3. “一切智/一切种智”与“萨婆若”: - 《摩诃般若波罗蜜经》使用音译词,称“一切智/一切种智”为“萨婆若”或“萨婆若道”。

4. “一切法”的范畴界定: - 《大方等大集经》对“一切法”进行了明确的范畴界定,指出其包含“色受想行识,眼乃至意,色乃至法,眼色因缘生识乃至意法因缘生识”等有为无为诸法。

5. “体性空”与“虚空印”: - 《大宝积经》(宝积部)在论述空性时,独特地使用了“体性空”、“虚空印”以及“不可说法印”等术语,用以阐明诸法无自性、无作者、不可言说的本质。

四、与相关概念的关系

1. 与诸空体系的关系 毕竟空并非孤立的概念,而是大乘空义体系中的重要一环。 - 在《摩诃般若波罗蜜经》中,“毕竟空”常与“无始空”并提,用以说明诸法无所有性、无根本实性的特征。 - 在《大方等大集经》中,行者被教导要如实了知多种空,包括:内空、外空、内外空、空空、大空、第一义空、有为空、无为空、毕竟空、无始空、散空、性空,以及自相空、一切法空、不可得空、无法空、有法空、无法有法空、法法相空、无法无法相空、自法自法相空等。在这些分类中,“毕竟空”与“不可得空”(一切法不可得)、“性空”(一切有为无为法性空)等相互呼应,共同论证了诸法无自性、不可得的实相。

2. 与三解脱门的关系 《大宝积经》将空寂之理与修行法门紧密结合,指出一切诸法皆悉空寂,并具足三解脱门。其中,“空者是空解脱门”;“空无空相名无相解脱门”;因法空无相,则无所愿求,称为“无愿解脱门”。

3. 与阿字总持门的关系 《大宝积经》以“阿字总持门”(或称“阿字门”、“阿字陀罗尼”)作为总摄。指出一切诸法皆无作、寂灭、无分别、无自性、无有边、无有门、无所趣,而“阿字门”正是引导众生解入这些无相、空寂实相的方便法门。

4. 与虚空、菩提、涅槃的等同关系 《大方等大集经》中,频繁以“虚空”为喻来阐明空义,指出诸法之性如同虚空,无高下、无生灭、无增减。同时,经中强调“空及菩提即是一如,空与菩提是一非二”;“实际究竟空故,是故言一切法是无尽门无尽际”。而“涅槃者无尽,所谓空故、无性故”,因此“一切法亦复如是,以是故言一切法与涅槃等”,从而将空性、实际与涅槃彻底等同起来。

五、代表性原文引用

1. 《摩诃般若波罗蜜经》:“毕竟名诸法毕竟不可得,非常非灭故。何以故?性自尔。是名毕营空。” 2. 《大方等大集经》:“毕竟名诸法至竟不可得” 3. 《大宝积经》:“一切法毕竟空中,亦无声闻地,无辟支佛地,无菩萨地,无佛地,亦无诸地差别之相。” 4. 《大宝积经》:“世间体性自空寂,一切诸法无有作。”

By SutraAI-generated

入中論善顯密意疏B0044 · 藏傳論典部

《入中論善顯密意疏》將「畢竟空等四空」列為四組空之第三組,於釋義中對「畢竟空」作了層次分明的闡述。

一、定義之核心頌文 疏引頌云:「若法無究竟,說名為畢竟,彼由彼性空,是為畢竟空。」 此頌確立畢竟空之基本結構:諸法若無「究竟」之體,即名為「畢竟」;此畢竟由畢竟自性空,方名為「畢竟空」。「彼由彼性空」明示其為自空之模式,非由他法使空。

二、「究竟」之特殊所指 疏釋釐清「究竟」於此處非泛指終極,而是特有所指。 疏云:「若執常斷一邊,即墮險處,說名究竟。」即墮於常、斷二邊之險處,方名究竟。疏中明示:此並非無為法之常,亦非阿羅漢斷絕業力生死相續之究竟,而是所治品之常斷險處。於何法上,墮邊執見之常斷二邊皆不可得,即說名畢竟。此界定凸顯畢竟乃離二邊見之處,非時間或境界之終極。

三、自空原則之貫徹 畢竟空之釋義體現全疏貫徹之「自空非他空」原則。 疏批判「瓶以瓶空乃自空、瓶不以瓶空而以實空是他空」之說,明若自法上無自法,他法上亦無自法,則瓶應成畢竟無,餘一切法皆應如是。此與畢竟空「即彼畢竟由畢竟自性空」之自空結構相呼應。 前承「無為由彼自性空,說名無為空」之釋例,可見自空模式貫穿各空之釋義。

四、依經部引證 疏引《寶積經》:「中道正觀諸法者,不以空性令諸法空,但法性自空。」 明諸法若有自相之體性,則非法自空;經說法性自空,須從諸法自體空,方為自性空。又引《三摩地王經》:「斷除有無與淨不淨二邊,亦不住中間。」 顯示斷除二邊亦不住中間實有,為除彼執故說此空。

五、破他宗之顯空 疏並以此空破他宗所執之實有。 疏中指出唯識師遠離自宗所說常斷二邊後,許彼中道以為實有。此正墮於中間之實執,畢竟空之說即為遣除此執。

六、空性自空之連貫 疏中另引頌:「諸法無自性,智者說名空,復說此空性,由空自性空,空性之空性,即說名空空,為除執法者,執空故宣說。」 顯示空性自身亦由自性空,名為空空,與畢竟空之自空結構相貫通,構成全疏「自空」原則之完整脈絡。

摩訶般若波羅蜜經T0223 · 般若部

《摩訶般若波羅蜜經》於十八空序列中明確定義畢竟空:「畢竟名諸法畢竟不可得,非常非滅故。何以故?性自爾。是名畢竟空。」「非常非滅」與「性自爾」為本經十八空各條共用的格式,強調空性非斷非常、法爾如是,非由造作而得。本經又以「五陰」稱五蘊(如「示五陰世間畢竟空」),以「薩婆若」稱一切智、一切種智,皆為鳩摩羅什譯本的特有用詞。

畢竟空在本經中首先是菩薩淨化六波羅蜜、莊嚴薩婆若道的根據:住檀那波羅蜜「畢竟空,不生慳心故」,住尸羅波羅蜜「畢竟空,罪不罪不著故」,乃至住般若波羅蜜「畢竟空,不生癡心故」;總攝而言則「畢竟空故、不來不去故、不施不受故、非戒非犯故、非忍非瞋故、不進不怠故、不定不亂故、不智不愚故」,菩薩於無生法中不分別毀害輕慢恭敬。

畢竟空與無始空常並舉為菩薩觀照與教化的雙重所依。須菩提問「我無邊故色淨」之因緣,佛答「畢竟空、無始空故」。菩薩「住二空中——畢竟空、無始空——為眾生說法」,以夢、響、影、焰、幻、化喻示五陰、十二入、十八界皆空無所有,以方便力拔出眾生安置無餘涅槃及涅槃道。須菩提讚歎:「諸法無所有性,畢竟空、無始空而分別諸法,是善是不善、是有漏是無漏,乃至是有為是無為」,佛印可此為菩薩「希有難及法」,聲聞、辟支佛所無有。

在忍辱與布施的具體行持中,畢竟空是菩薩的觀照內容。菩薩遭瓦石刀杖加害時思惟:「諸法實性,所謂畢竟空、無法、無眾生」。布施時則觀「是中誰與?誰受?所施何物?是一切法自性皆不可得,以畢竟空故」,並聯舉內空、外空、內外空、大空、第一義空、自相空,「住是諸空布施,是時具足檀那波羅蜜」。

般若波羅蜜自身亦以畢竟空為其體性。須菩提言「離波羅蜜是般若波羅蜜」,佛印可「畢竟空故」;又言「盡波羅蜜是般若波羅蜜」,佛言「一切法畢竟盡故」。般若波羅蜜「示佛世間畢竟空」,自五陰世間乃至一切種智世間皆畢竟空。菩薩行般若時「一切分別想斷,畢竟空故」,無愛無憎,如虛空無分別、如幻人無分別、如鏡中像無分別。經末須菩提更追問:「若眾生畢竟不可得,法亦不可得,法性亦不可得,畢竟空、無始空故」,菩薩云何行六度、為眾生說法,此即本經以畢竟空貫穿修行與教化之張力所在。

大寶積經T0310 · 寶積部

《大寶積經》(唐菩提流志譯,寶積部)在本段以文殊師利與須菩提的問答,將「畢竟空」定位為一切聖凡諸地得以建立的平等基底,而非對諸法的消極否定。

一、畢竟空為建立諸地之所依。須菩提追問:若一切法皆悉平等,當於何所建立聲聞地、辟支佛地、菩薩地、佛地?文殊師利答以「依一切法畢竟空中,建立種種諸地之相,亦非空性而有差別」。此處「畢竟空」不是抹除階位差別,而是差別得以安立的場域——正如十方虛空本無東西南北之異,卻不妨依虛空說此是東方虛空、彼是南方虛空。經文以「虛空界」為喻,強調空性本身無差別(「非於虛空而有異也」),而言說施設的種種地相並不與空性相違。

二、畢竟空與「自性平等」「法界平等」互為表裏。文殊師利先說「一切諸法自性平等」,以此解釋自己何以亦住凡夫地;又說「一切諸法法界平等如是了知」,以此解釋何以為應正等覺。須菩提所問「若一切法皆悉平等」正是承此而來,而文殊師利以「畢竟空」作答,可見在本經語境中,「自性平等」「法界平等」與「畢竟空」指向同一實相,只是側重不同:平等就體性言,畢竟空就離自性言。

三、畢竟空不礙菩薩智慧方便。緊接畢竟空之論,文殊師利說自己已證入正性離生而「亦復出」,並稱此為「菩薩智慧方便」。經文以射師喻說明:菩薩為調伏聲聞、辟支佛故入正位,還於彼出,不墮聲聞辟支佛地。這顯示畢竟空在本經中並非靜態的歸宿,而是菩薩出入自在的根據——正因為諸地皆依畢竟空建立、空性無差別,菩薩方能證入而不滯、方便而出而不失。

四、術語形式。本經直接使用「畢竟空」一詞(「依一切法畢竟空中」),同時以「空性」為同義替換(「亦非空性而有差別」)。此外,本段以「自性平等」「法界平等」「正性離生」等語輔助展開畢竟空的義理脈絡,未見以「真如」「實際」等他詞替代畢竟空的用法。

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