Dharma · AI Companion

金剛印

vajramudrā

金刚印,密教表如来坚固不坏智之印契,亦指所执金刚杵。AI-generated

Type PhenomenaDifficulty IntermediateTruth-level span ultimately points to III · nominal designationInitial AI estimate · evolves with use

杵器印契本为事相;密教「即事而真」读印契即如来坚固不坏智之相,属表法正面重释,开至 3(从空出假、称性起用),未及离言宗旨故不上 4。

A Contemporary ReadingAI-generated

What this concept is saying

金剛印 (vajramudrā, “Vajra Seal” or “Adamantine Seal”) is an esoteric Buddhist seal that embodies the Tathāgata’s indestructible wisdom. Depending on context, the name may refer to a ritual hand gesture, the vajra held by a deity or practitioner, a deity’s identifying emblem, or a vajra form used to delimit and adorn a maṇḍala. These meanings belong to one symbolic system, but they should not be collapsed into one another.

“Vajra” does not merely mean “very strong.” The *Commentary on the Mahāvairocana Sūtra* (*Dà Rì Jīng Shū*, 《大日經疏》) defines it through the nature of awakened wisdom: “Vajra is the Tathāgata’s wisdom; because it is not born from conditions and cannot be destroyed, it is called the indestructible vajra.” The commentary further describes its substance as 畢竟空智 (wisdom of ultimate emptiness)—foremost among all forms of steadfastness.

This requires care. Ordinary determination is conditioned: it depends on health, mood, praise, fear, memory, and circumstance. It can therefore be strengthened, exhausted, redirected, or broken. Vajra wisdom is not simply an unusually durable mental state. It is wisdom that directly knows the empty, ungraspable nature of phenomena. Because it does not establish an independent self, object, doctrine, or experience that must be defended, there is ultimately nothing in it for circumstances to shatter.

Its firmness and its emptiness are therefore not opposites. Emptiness is not a void that leaves everything meaningless, while firmness is not rigid attachment to a position. The seal is “adamantine” precisely because its stability is the stability of non-grasping. A rigid identity cracks when reality contradicts it; wisdom that does not appropriate an identity has no such fracture line.

The word 印 (mudrā, seal) is equally important. The *Commentary on the Mahāvairocana Sūtra* says, “The seal means that which cannot be transgressed.” It explains this as the continuity from 菩提心 (bodhicitta, the mind of awakening) to ultimate Buddha-wisdom without retreat or reversal. To be “sealed” by the Dharma-realm is to bear its mark and to participate in the universally responsive body of the Dharma-realm.

A seal in this sense does more than represent an idea. Like an official seal, it certifies, identifies, and authorizes; like an imprint, it gives a definite form to something otherwise difficult to see. In esoteric practice, bodily gesture, mantra, visualization, and awakened meaning are coordinated so that the practitioner does not merely think about wisdom from a distance. The body forms its emblem, speech voices its pattern, and mind contemplates its reality.

This is why reducing vajramudrā to “a Buddhist hand sign” misses its center. The fingers are the visible surface. What is being sealed is the inseparability of the practitioner’s embodied activity and the indestructible wisdom of the Tathāgata.

The classical sources preserve several related but distinct dimensions:

1. A ritual mudrā. The hands and fingers are arranged according to a transmitted procedure. Different rites and textual systems give different arrangements.

2. An embodiment of wisdom. The seal signifies the Tathāgata’s indestructible wisdom and is described as the appearance of the samādhi that gives rise to vajra-like wisdom-power.

3. A deity’s emblem. One-pronged, three-pronged, five-pronged, double-ended, and crossed or 羯磨 (karma) vajras can distinguish deities or members of their retinues.

4. A maṇḍala boundary and adornment. Vajra forms may surround a maṇḍala as a protected limit. Here “indestructibility” becomes spatially expressed: the awakened field is marked off from intrusion and confusion.

5. The vajra implement itself. In portions of the *Mahāvairocana Sūtra* (*Dà Rì Jīng*, 《大日經》), “vajra seal” can denote not only a hand seal but also the 金剛杵 (vajra pestle or ritual vajra; 跋折羅) being held.

These are not interchangeable dictionary definitions. They are coordinated manifestations of one principle: awakened wisdom takes the form of gesture, implement, emblem, sacred space, and disciplined conduct.

The sources also do not prescribe one universal finger arrangement under the name “vajramudrā.” The *Mahāvairocana Sūtra*, its commentary, and the *Vajraśekhara Sūtra* (*Jīngāng Dǐng Jīng*, 《金剛頂經》) preserve different forms and ritual settings.

The commentary describes, among others:

- A form in which the “water fingers” are bent toward the palms and the “wind fingers” touch the backs of the “fire fingers” without joining each other. - A 金剛不壞印 (indestructible-vajra seal) in which the two wind fingers are bent toward the tips of the two space fingers, forming the shape associated with the syllable *va*. - A 金剛三昧慧金剛印 (vajra-samādhi wisdom vajra seal) identified with Vajrapāṇi’s five-pronged vajra seal. - Four methods of forming a fist, only one of which is specifically called the 金剛拳 (vajra fist): the space finger—the thumb in this symbolic anatomy—is enclosed within the palm.

The *Mahāvairocana Sūtra* describes forms based on the vajra fist and also speaks of 金剛合掌 (vajra joined palms), a “great seal,” and a seal of the Vajra-holder. In one form, the two hands have complementary roles: the samādhi hand is likened to a sheath and the wisdom hand to a sword. This does not turn the mudrā into pantomime. It expresses an exact relation: stable contemplative absorption contains and supports penetrating wisdom.

The *Vajraśekhara Sūtra* begins another sequence from firmly joined palms and interlaced fingers: “Firmly join the palms; interlace all the fingers. This is called the vajra palm; bind them fully as the vajra bond.” It then says, “All samaya seals are born from the vajra bond.” The text gives further configurations in which the middle fingers stand like fangs, bend into a jewel shape, take the form of lotus leaves, or are joined by the index fingers. These differentiated forms must be retained; they should not be compressed into a generic gesture called “the vajra mudrā.”

The differences are not necessarily contradictions. “Vajramudrā” names a family of ritually situated forms as well as the wisdom-principle that makes the family intelligible. A hand position should therefore be identified by its scripture, lineage, deity, and rite—not reconstructed by combining isolated instructions from different sources.

The *Vajraśekhara Sūtra* gives the seal a further cosmic-liturgical dimension. When Vairocana enters the samaya of the delightful offerings of all Tathāgatas, a seed syllable emerges from the hearts of all the Tathāgatas and manifests as the vajra seal. Through the gate of this seal, Tathāgata bodies as numerous as the dust particles of all worlds appear, gather into unity, and assume a Vajrasattva-like form. Here the seal is not merely something an individual makes. It is a gateway through which the multiplicity of awakened manifestations is gathered without losing its source in the one awakened intention.

That imagery locates vajramudrā within the esoteric path. The aim is not to acquire a magical hand technique. The path brings body, speech, and mind into correspondence with awakened body, speech, and mind. The seal belongs especially to the bodily dimension, but never functions in isolation from mantra, contemplation, samaya commitments, maṇḍala, and the guidance of an 阿闍梨 (ācārya, qualified ritual teacher).

Its liberative force is expressed in the *Mahāvairocana Sūtra*: “The seal of great vajra wisdom can destroy the city of ignorance and awaken those who sleep; gods and humans cannot destroy it.” “City” is exact and suggestive. Ignorance is not one mistaken opinion waiting to be corrected. It is fortified by habitual perception, emotional defence, self-narration, craving, social reinforcement, and repeated action. Vajra wisdom does not merely redecorate that city. It penetrates the structure by exposing the grasping upon which it depends.

The commentary consequently says of the vajra wisdom implement: “Using this, one penetrates all dharmas without obstruction.” This is not a promise of encyclopedic information. It means that emptiness-wisdom meets phenomena without being stopped by the false appearance that things possess fixed, independent natures.

A walkthrough in everyday life

Imagine an evening commute. You are tired after overtime work. Your phone shows a message from your partner: “You never listen.” Almost immediately, the mind begins constructing a case for the defence.

First, notice what “ordinary firmness” looks like. Your jaw tightens; you reread the message; memories that support your innocence become vivid; counterexamples to your partner’s complaint disappear from view. You feel compelled to send a decisive reply. This can feel like clarity, but much of its apparent strength comes from protecting a threatened self-image: “I am the reasonable one.” Because that strength depends on maintaining the image, one more message can break it and produce anger, shame, or withdrawal.

Now walk through the meanings of vajramudrā without pretending that an uninitiated commuter is performing the full rite.

First: the seal as a definite boundary. Before replying, you establish a boundary around reactive momentum: no message for three breaths. This pause is not itself the classical vajramudrā, but it helps us understand what a seal does. It marks a commitment that agitation is not permitted to dictate the next act.

The common mapping error is to think that a vajra boundary means emotional suppression: “Nothing must get through.” A maṇḍala’s vajra enclosure does not symbolize numb isolation. It protects a field in which awakened activity can occur. In ordinary life, the analogous boundary protects attention from compulsion so that pain may be known rather than discharged.

Second: the seal as an emblem of identity and orientation. In a maṇḍala, a vajra form identifies a deity and its awakened quality. In your situation, the decisive question becomes: what quality will this body now bear—the emblem of self-defence or the emblem of non-harming wisdom? You relax the hand holding the phone and let the body stop rehearsing combat.

This remains an analogy, not a substitute ritual. The canonical mudrā is a precise bodily form transmitted within a practice system; “relaxing your hand” is not secretly the same mudrā. What carries across is the insight that bodily configuration and mental orientation condition one another.

Third: the vajra as penetrating wisdom. You examine the experience rather than immediately believing its story. The accusation, the heat in the face, the memory of last week, and the sentence “I am being treated unfairly” have all arisen through conditions. None is a permanent self; none independently establishes the whole truth of the relationship.

Here indestructibility does not mean clinging harder to your version of events. It means remaining with the empty and conditioned character of the experience without fleeing into attack. A position defended as “mine” is fragile. The capacity to see every position as dependently arisen is harder to overthrow because it has no fixed fortress to protect.

Fourth: the complementary roles of samādhi and wisdom. The scriptural image of sheath and sword helps here. Collected attention is the sheath: it prevents discernment from becoming uncontrolled aggression. Wisdom is the sword: it cuts through the confused fusion of feeling, interpretation, and identity. Concentration without wisdom might merely hold anger down; analytic cleverness without collectedness might manufacture a sharper insult. Their coordination permits an honest but non-destructive response.

Fifth: the vajra bond as a generative basis. The *Vajraśekhara Sūtra* says that the samaya seals arise from the vajra bond. At the level of everyday analogy, one stable commitment can generate many appropriate responses. If your underlying bond is “I will not abandon truth or care merely to win,” it may issue in silence, a clarifying question, an apology, or a firm boundary. The commitment is stable; its compassionate expressions remain responsive.

Sixth: multiplicity gathered into awakened orientation. Several “selves” are present: the exhausted employee, the accused partner, the frightened child remembered from earlier life, the person who wants peace, and the person composing a rebuttal. The *Vajraśekhara Sūtra’s* vision of countless awakened bodies emerging and gathering into one should not be turned into a psychological theory. Nevertheless, it offers a disciplined comparison: multiplicity need not be crushed. It can be gathered into a single awakened intention.

You might finally write: “I can hear that you feel ignored. I’m defensive and too tired to answer well on the train. Can we talk when I’m home?” This is not “performing vajramudrā” in the ritual sense. It is an ordinary action illuminated by its logic: a protected field, embodied restraint, penetrating discernment, and a response that does not betray bodhicitta.

The same walk can be made while scrolling social media. An algorithm presents material selected to retain attention, often by intensifying desire, indignation, comparison, or fear. A vajra-like orientation does not mean becoming immune to technology through willpower. It means seeing the entire event—recommendation system, bodily arousal, prior preferences, social identity, and impulse to share—as conditioned. The firmness lies in not allowing a conditioned impulse to become an unquestioned command.

One must not claim that neuroscience or algorithmic research “proves” vajra wisdom. Scientific models can investigate attention, habit, affect, and decision-making, but they do not thereby establish the Buddhist realization of emptiness or the ritual efficacy claimed within esoteric traditions. They can provide useful comparisons; the philosophical and contemplative claims remain distinct, and scientific accounts of consciousness themselves contain significant unresolved questions.

Why contemporary people need it

Contemporary culture often offers two inadequate versions of strength.

One is hardness: never admit uncertainty, never change one’s position, dominate the exchange, and convert vulnerability into control. This resembles vajra only superficially. It is actually brittle because it depends on continual confirmation of a defended identity.

The other is endless flexibility without orientation: adapt to every demand, optimize for every metric, revise oneself for every audience, and call exhaustion “resilience.” That too lacks vajra quality. Nothing is allowed to become a non-negotiable commitment to awakening, truthfulness, or non-harming.

Vajramudrā presents a third possibility: unbreakable orientation without a rigid self. Its continuity runs from bodhicitta to Buddha-wisdom. What does not change is not an opinion, mood, persona, or social role. It is the refusal to abandon awakening for oneself and others. Because that orientation is grounded in emptiness rather than egoic possession, it can express itself differently under different conditions.

This matters in intimate relationships. One may hold a firm boundary without turning the other person into an enemy. It matters in parenting. A parent can remain committed to a child’s welfare while relinquishing the fantasy of controlling the child’s identity. It matters at work. One can refuse dishonest conduct without needing to perform moral superiority. It matters online. One can revise a mistaken claim without experiencing correction as personal annihilation.

The symbol also restores the body to spiritual understanding. Contemporary readers can easily reduce wisdom to possessing correct propositions. Esoteric Buddhism insists that understanding must take form: in posture, gesture, speech, attention, relationship, and environment. If anger is philosophically rejected but rehearsed in the shoulders, voice, and tapping fingers, the “view” has not yet permeated the whole person.

At the same time, ritual form guards against a purely private spirituality. One cannot simply decide that any personally meaningful gesture is vajramudrā. Its forms are inherited through scriptures and lineages; they belong to maṇḍalas, deities, mantras, vows, and ritual sequences. That constraint is part of what “seal” means. Practice is not authenticated merely by subjective intensity.

Most importantly, the seal shows where firmness belongs on the path of liberation. Buddhism does not ask us to make impermanent experiences permanent. Sensations, emotions, relationships, bodies, institutions, and meditative states remain conditioned. Trying to make them indestructible produces suffering. What is vajra-like is the wisdom that knows their emptiness and the bodhicitta that refuses to turn away from liberation.

Thus the image joins three movements:

- Bodhicitta establishes the direction: awakening is sought for the benefit of beings. - Samādhi gathers the scattered person: body, speech, and mind cease pulling in unrelated directions. - Emptiness-wisdom penetrates the apparent solidity of phenomena: ignorance loses the walls from which its “city” is built.

The mudrā gives these movements an embodied seal. It does not replace ethical discipline, meditation, wisdom, compassion, or initiation. It concentrates their meaning in a ritual form.

Common misreadings and clarifications

“It is simply a hand gesture.” The hand form is essential, but it is not self-sufficient. Vajramudrā can denote an embodied seal, indestructible wisdom, a vajra implement, a deity’s emblem, or a maṇḍala’s adornment and protective boundary. Its ritual significance comes from the coordination of form, mantra, visualization, samaya, and doctrinal meaning.

“There is one standard vajramudrā.” The sources supplied here preserve multiple procedures. The *Mahāvairocana Sūtra*, its commentary, and the *Vajraśekhara Sūtra* begin from different hand configurations and distinguish vajra palm, vajra bond, vajra knot, vajra fist, great seal, indestructible-vajra seal, and other forms. A diagram detached from its source cannot safely stand for the whole category.

“The gesture makes the practitioner magically invincible.” The central indestructibility is that of Tathāgata wisdom, not the biological body, personality, reputation, or worldly plans. Texts describe powerful ritual effects—including overcoming demonic obstruction and making the proclamation of Dharma heard throughout the directions—but these claims belong to their tantric ritual and contemplative framework. They should neither be trivialized as stage magic nor converted into promises of physical immunity.

“Indestructible means stubborn.” Stubbornness fixes upon a conditioned view and refuses correction. Vajra wisdom penetrates conditioned views because it knows their emptiness. It can therefore change its practical response without betraying its awakened orientation. Rigidity defends a position; vajra firmness does not abandon bodhicitta.

“Not born from conditions” means that a permanent metaphysical thing exists inside us.” The commentary identifies vajra with the Tathāgata’s wisdom and with ultimate emptiness-wisdom. It should not be turned into an eternal ego or an independently existing substance. The very wisdom called indestructible is wisdom free from reifying independent nature.

“Emptiness makes the vajra symbol weak or merely negative.” Here emptiness is the basis of its strength. What depends on maintaining a fabricated essence can be threatened. Wisdom free from such fabrication is compared to space: it cannot be subdued by striking at a fixed object, because no such object has been established.

“The vajra held in the hand and the hand mudrā are always the same thing.” They are closely related but not always identical. In the *Mahāvairocana Sūtra*, “vajra seal” may refer to the mudrā or to the vajra implement. Elsewhere different numbers and arrangements of prongs serve as the emblems of particular deities. Context determines the referent.

“Every vajra form has the same function.” The classical material distinguishes one-, three-, and five-pronged forms, double-ended and karma vajras, specific deity emblems, maṇḍala enclosures, and several hand seals. They share an adamantine symbolic grammar but retain distinct ritual identities and functions.

“A modern mindfulness pause is itself vajramudrā.” No. A pause before replying to a message can illustrate restraint, collection, or non-grasping, but it does not become the transmitted esoteric seal merely because it feels meaningful. Everyday analogies illuminate the principle; they do not confer ritual authorization or erase lineage-specific detail.

“Anyone can reconstruct the practice from textual finger descriptions.” Classical finger terminology is technical, textual witnesses differ, and a mudrā normally belongs to a larger initiated rite. Instructions such as “water finger,” “wind finger,” or “space finger” cannot responsibly be assembled across scriptures into a homemade composite. Historical understanding is open to study; ritual performance is properly learned from a qualified ācārya within the relevant lineage.

The deepest point of vajramudrā is therefore not that a fragile person acquires an invulnerable shell. It is that body, speech, and mind are trained to cease taking fragility as a self. When bodhicitta is not abandoned, collectedness contains the mind, and emptiness-wisdom penetrates the structures of grasping, firmness no longer means refusing to bend. It means there is no delusive fortress left whose collapse could destroy the path.

Canonical EntryAI-generated

一、定义与核心要义

金刚印(vajramudrā)为密教中表征如来坚固不坏之智德的重要印契。其语义核心在于「金刚」一词所象征的不可破坏性。此印兼具印契、智德、诸尊幖帜与坛城严饰等多重意涵。

二、主要阐述

印契之通义与根本原理(大日经疏):「印」表不可违越之义,自菩提心至究竟佛慧,中间不退不转,故名不违越;以法界之印印弟子,令彼人已有法界标帜,同法界普门之身。

金刚之语义核心(大日经疏):「金刚者,如来智,非从缘生,不可破坏,故名金刚不坏」;其质「犹若虚空不可破坏,一切无能降伏之者」,其体乃「毕竟空智,于坚固性中最为第一」。

具体印相与结法: (一)大日经疏:通称之金刚印为二手皆屈水指向掌内,以二风指捻火指背而不相合;金刚不坏印为双屈二风指以指二空指头,合皆如嚩字之形;金刚三昧慧金刚印即金刚手所结之金刚五股印。 (二)大日经:以定慧二手皆作金刚拳,正直伸展火轮、风轮,虚空轮持地水轮,三昧手为鞘、般若为刀;金刚合掌为「普通一切菩萨法」之式样;大印以智慧手作金刚拳,舒风轮加于白毫际,如毘俱知形,才结即令无量天魔军退散;执金刚印以三补咤火轮为中锋,风轮为钩,水轮交于掌内。 (三)金刚顶经:「坚固结合掌,诸指互交结,名为金刚掌,极结金刚缚」;又以中指竖如牙、反屈如宝形、或如莲叶,以及头指附于中指等姿,构成金刚印之具体指相。

金刚拳之四种作拳法(大日经疏):大指竖之常作拳法;空指在掌中而拳之为金刚拳;十指出现于外;十指相叉皆令指头在掌内为二手拳。

金刚印之功用与境界: (一)出生金刚智力三昧之相;执持金刚智杵「用此贯彻诸法无所不通」。 (二)作此印已能令十方普得闻知宣说大法。 (三)「金刚大慧印,能坏无智城,晓寤睡眠者,天人不能坏」,具摧毁无明城郭、警觉沉眠之智德。 (四)吉祥金刚「手转金刚印,流散如火光,其明普遍照一切诸佛刹」,以此印放射光明。

金刚印之现起(金刚顶经):毘卢遮那佛入「一切如来适悦供养三昧耶」时,从一切如来心出「嚩日啰逻西」种字,现出金刚印;从此金刚印门,一切世界微尘等如来身皆得显现,后复聚为一体,化为金刚萨埵之相。

真言行持之加持(大日经):真实语之王「持执金刚印」,以金刚印摄持字轮分布于行者支分:「𤙖字金刚句」住于眉间,「娑字在唇下,是谓莲华句」,使行者即同执金刚之体。

诸尊幖帜与坛城严饰(大日经):金刚自在诸尊之印形有「三戟一股印,二首皆五峰,或执金刚鬘」之别;地藏眷属以「三股」「一股」「二首」「五股」「羯么」金刚印为幖帜;「种种金刚印,形色各差别,普放圆满光」;于诸方坛城以「金刚印遍严」、「金刚印围绕」作为守护界线。

行法中之实际运用(大日经疏):营造曼荼罗了时,阿阇梨在门外住法界兼菩提心,面对东方作金刚印,想同于佛。

三、不同部类与译本的表述差异

印名用词: (一)大日经疏以「金刚印」、「金刚不坏印」、「金刚三昧慧金刚印」三名并用,且以「金刚」一词贯通印、杵、座、拳等不同相状。 (二)大日经以「金刚印」、「金刚拳」、「金刚合掌」、「大印」互训其根本结法,并未另立「智拳印」、「内缚印」等他名。 (三)金刚顶经正说前标为「一切如来金刚三昧耶智印」,结印之异称有「金刚掌」、「金刚缚」、「金刚结」等,皆环绕「金刚」一词而立名。

「金刚印」之所指: (一)大日经中既指印契本身,亦指所执之金刚杵(即跋折罗)。 (二)大日经疏中与「法界印」互相发明,标志坚固不坏之如来智体。 (三)金刚顶经以金刚印由一切如来心所生,能总摄一切如来身相,并明言「诸三昧耶印,皆生金刚缚」。

结印起式:大日经疏以屈水指、捻火指之通式为说;大日经以金刚拳为基础;金刚顶经则以坚固结合掌为起点。三经所记结印方式不尽相同。

四、与相关概念的关系

(一)法界印:大日经疏以法界之印印弟子,金刚印与法界印互相发明。 (二)莲华印、大慧刀印:大日经中与金刚印对举而说,显示金刚印在印契系统中为坚固不坏之智德的根本标帜。 (三)金刚座、金刚不坏座:大日经疏提及,作为与金刚印相应之座,金刚不坏座亦名莲华坐、吉祥坐。 (四)金刚杵(跋折罗):金刚印与所执之杵在语义上互相关联,金刚印亦以杵之股数分为三股、一股、二首、五股、羯么等诸种相状。 (五)三昧耶印:金刚顶经明言「诸三昧耶印皆生金刚缚」,以金刚缚为一切三昧耶印之所从生。 (六)第五佛:金刚顶经以金刚印之具体指相为「第五佛」之印。 (七)无动尊密印:大日经中金刚拳所成之印相即无动尊密印之威仪。

五、代表性原文引用

(一)大日经疏:「印是不可违越义也。」 (二)大日经疏:「金刚者,如来智,非从缘生,不可破坏故,名金刚不坏。」 (三)大日经疏:「用此贯彻诸法无所不通。」 (四)大日经:「金刚大慧印,能坏无智城,晓寤睡眠者,天人不能坏。」 (五)大日经:「种种金刚印,形色各差别,普放圆满光。」 (六)大日经:「金刚印遍严,中羯磨金刚。」 (七)金刚顶经:「坚固结合掌,诸指互交结,名为金刚掌,极结金刚缚。」 (八)金刚顶经:「诸三昧耶印,皆生金刚缚。」 (九)金刚顶经:「我今说结仪,金刚结无上。」

By SutraAI-generated

大毘盧遮那成佛神變加持經(大日經)T0848 · 密教部

此經所論「金剛印」,兼具印契、智德、諸尊幖幟與壇城嚴飾四重意涵,分述如下:

一、作為印契之具體結法與威儀:行者結印時,先以定慧二手「皆作金剛拳」,正直伸展火輪、風輪,虛空輪持地水輪,三昧手為鞘,般若為刀,是即無動尊「密印之威儀」。「金剛合掌」被標為「普通一切菩薩法」之標準式樣。「大印」之名見於「此印名大印,念之除眾魔」,以智慧手作金剛拳,舒風輪加於白毫際,如毘俱知形,纔結即令無量天魔軍退散。另有「執金剛」之印相,以三補吒火輪為中鋒,風輪為鉤,水輪交於掌內。

二、作為破障之智德:「金剛大慧印,能壞無智城,曉寤睡眠者,天人不能壞」,明金剛印具摧毀無明城郭、警覺沉眠之智德,非天人所能破壞。吉祥金剛亦「手轉金剛印,流散如火光,其明普遍照一切諸佛剎」,以此印放射光明而讚歎真言行不可得之理。

三、作為真言行持之加持:真實語之王「持執金剛印」,以金剛印攝持字輪,分布於行者支分:「𤙖字金剛句」住於眉間,「娑字在脣下,是謂蓮華句」,使行者即同執金剛之體。

四、作為諸尊幖幟與壇城嚴飾:經列金剛自在諸尊之印形有「三戟一股印,二首皆五峯,或執金剛鬘」之別。地藏眷屬各以不同股數之跋折羅為印:「三股金剛印」「一股金剛印」「二首金剛印」「五股金剛印」「羯麼金剛印」。「種種金剛印,形色各差別,普放圓滿光」。於諸方壇城,金剛印復作為圍繞、莊嚴之守護界線,如「金剛印遍嚴,中羯磨金剛」及多處「金剛印圍繞」之說。

此經特殊用語:經中「金剛印」一詞既指印契本身,亦指所執之金剛杵(即「跋折羅」);又以「金剛拳」「金剛合掌」「大印」互訓其根本結法,並未另立「智拳印」「內縛印」等他名。其與「蓮華印」「大慧刀印」對舉而說,顯示金剛印在印契系統中為堅固不壞之智德的根本標幟。

金剛頂一切如來真實攝大乘現證大教王經(金剛頂經)T0865 · 密教部

本經以「金剛印」為密教象徵堅固不壞智之印契,其核心表述為「一切如來金剛三昧耶智印」。

一、金剛印的現起 經載毘盧遮那佛入「一切如來適悅供養三昧耶」時,從一切如來心出「嚩日囉邏西」種字,隨即便現出「金剛印」。從此金剛印門,一切世界微塵等如來身皆得顯現,後復聚為一體,化為金剛嬉戲大天女如金剛薩埵之相,依世尊不動如來曼荼羅左邊月輪而住。由此可知,本經之金剛印乃由一切如來心所生,能總攝一切如來身相。

二、金剛印的結印儀軌 經中以偈頌詳述其結法:「堅固結合掌,諸指互交結,名為金剛掌,極結金剛縛。」即以堅固結合之掌、諸指互相交結而成之掌,名為「金剛掌」;由此進一步極結,則成「金剛縛」。經文明言:「諸三昧耶印,皆生金剛縛」,明指金剛縛為一切三昧耶印之所從生。又云:「我今說結儀,金剛結無上」,以「金剛結」為此結印法之無上之稱。

三、金剛印的手相細節 偈頌復列出具體指相:「堅薩埵金剛,中指竪如牙,大中如寶形,中指而反屈。移指如蓮葉,中指於交合,頭指附中指,名為第五佛。」此段以中指之竪立如牙、反屈如寶形、或如蓮葉,以及頭指附於中指等姿,說明金剛印系列之具體指相,並以此等印相為「第五佛」之印。

四、本經用詞特點 本經論此印契,主要名為「金剛印」,又於正說之前標為「一切如來金剛三昧耶智印」;其結印之異稱有「金剛掌」、「金剛縛」、「金剛結」等,皆環繞「金剛」一詞而立名,凸顯堅固不壞之智德。

大毘盧遮那成佛經疏(大日經疏)T1796 · 經疏部

本部《大毘盧遮那成佛經疏》(唐一行記)論述「金剛印」之要點如下:

一、印契之通義與根本原理。經疏釋「印」云:「印是不可違越義」,自菩提心至究竟佛慧,中間不退不轉,故名不違越;又此印量同法界,以法界之印印弟子,令彼人已有法界標幟,同法界普門之身。

二、金剛印之語義核心。經疏以「金剛者」直接定義:為如來智,非從緣生,不可破壞,故名金剛不壞。 其質「猶若虛空不可破壞,一切無能降伏之者」,故以虛空顯色為標幟;其體乃「畢竟空智,於堅固性中最為第一」。

三、具體印相與結法。經疏記述數種金剛印的結法:(甲)通稱之金剛印——二手皆屈水指向掌內,以二風指捻火指背而不相合;由此金剛印能壞無智之城,一切不能壞也。(乙)金剛不壞印——雙屈二風指,以指二空指頭,合皆如嚩字之形。(丙)金剛三昧慧金剛印——即金剛手所結之金剛五股印。

四、金剛拳之四種作拳法。經疏另列作拳四種:(一)大指豎之,常作拳法;(二)空指在掌中而拳之,名金剛拳;(三)十指出現於外,指在外拳;(四)十指相叉皆令指頭在掌內,曰二手拳。

五、金剛印之功用與境界。金剛印為出生金剛智力三昧之相;執持金剛智杵乃「用此貫徹諸法無所不通」;作此印已能令十方普得聞知宣說大法。

六、相關印座名稱。經疏同時提及「金剛座」與「金剛不壞座」(亦名蓮華之坐、吉祥之坐),作為與金剛印相應之座。

七、行法中之實際運用。經疏記營造漫荼羅了時,阿闍梨在門外住法界兼菩提心,面對東方而作金剛印,想同於佛。

術語形式方面,本部以「金剛印」、「金剛不壞印」、「金剛三昧慧金剛印」三個名稱並用,並以「金剛」一詞貫通印、杵、座、拳等不同相狀,且與「法界印」互相發明,標誌堅固不壞之如來智體。

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