What This Concept Is About
In the liberating path of the Dharma, 俱解脫 (ubhayatobhāga-vimukta, "liberation in both ways") represents an extremely rare and supremely complete state of liberation. In a single sentence: it is an arhat who simultaneously possesses both the meditative realization of the eight liberations through direct bodily witness and the wisdom of completely extinguishing all outflows — with concentration and wisdom both perfected, the mind well liberated.
To understand 俱解脫, one must first clarify the word 「俱」 ("both") — it refers to the absolute co-presence and perfection of two powers: 定 (samādhi, meditative concentration) and 慧 (prajñā, wisdom).
In the early scriptures, 阿羅漢 (arhat, "worthy one") — sages who have completely eradicated all defilements and transcended the cycle of birth and death — are not of a single type. Based on each practitioner's relative achievement on the axes of meditative concentration and wisdom, the scriptures make an extremely rigorous classification of sages. And 俱解脫 stands at the very summit.
To explain this concept with precision, we must dismantle its two core supporting pillars:
1. The Concentration Side: The Eight Liberations and "Bodily Witness"
The criterion for a both-sided liberator on the side of concentration is attaining 「身作證成就遊」 (also rendered 「身觸成就遊」 or 「身作證具足住」, "dwelling in the attainment of bodily witness") with respect to the 八解脫 (aṣṭa-vimokṣa, the eight liberations). The 「八解脫」 is a sequence of extremely profound meditative attainments and mental-spiritual transformation: * First Liberation (色觀色, "perceiving forms, contemplating forms"): With perceptions of material form within the mind, one contemplates external forms (such as contemplating corpses or impurity), thereby overcoming attachment to material things. * Second Liberation (內無色想外觀色, "internally without perceptions of form, contemplating forms externally"): Internally free of perceptions of form, pure and unobstructed, yet still contemplating external forms to further consolidate transcendence of the material world. * Third Liberation (淨解脫身作證成就遊, "the pure liberation, dwelling in bodily witness"): Focusing on pure, beautiful light or colors (e.g., the pure vision), reaching the ultimate of concentration, experiencing in body and mind an extreme purity and detachment from defilement. * Fourth Liberation (無量空處, the sphere of infinite space): Transcending all material form and entering the boundless, vast samādhi of infinite space. * Fifth Liberation (無量識處, the sphere of infinite consciousness): Abandoning the concept of space, turning instead to the infinitely expanding awareness and consciousness itself. * Sixth Liberation (無所有處, the sphere of nothingness): Transcending the expansion of consciousness, entering the supremely tranquil concentration of "nothing whatsoever" where neither consciousness nor its objects have any basis. * Seventh Liberation (非有想非無想處, the sphere of neither perception nor non-perception): Entering the highest mundane meditational state, where mental and physical activities are extremely subtle, seemingly present yet absent. * Eighth Liberation (想知滅解脫 / 滅盡定, the liberation of the cessation of perception and feeling / the attainment of cessation): Completely extinguishing all coarse and subtle mental activities, feelings (受, vedanā) and perceptions (想, saṃjñā), reaching ultimate stillness.
What requires special clarification is the meaning of 「身作證」 (kāya-sākṣin, "bodily witness"; also rendered 身觸, "bodily contact"): The 「身」 ("body") here by no means refers only to this physical body composed of the four great elements, but rather to the practitioner's wholehearted, personally experienced, extremely concrete bodily-and-mental realization — personally penetrating and undergoing the entire sequence from the first concentration to the eighth cessation attainment. This is an experience that penetrates to the very bone and marrow — by no means a matter of imagination or logical inference.
2. The Wisdom Side: Seeing with Wisdom that All Outflows Are Exhausted
Mere possession of the eight liberations in concentration, without wisdom, amounts at best to extremely deep mundane meditative concentration (e.g., the 身證 "bodily witness" practitioner, who can enter the eight liberations but has not yet seen the exhaustion of outflows and still needs to 行无放逸, "practice without negligence," in continued cultivation). A both-sided liberator must simultaneously possess the ultimate vision of wisdom — correctly contemplating that the five aggregates 色、受、想、行、識 (rūpa, vedanā, saṃjñā, saṃskāra, vijñāna — form, feeling, perception, volition, consciousness) are all impermanent, suffering, empty, and without self, thereby completely uprooting all craving and attachment to the world, reaching the state of 「慧觀諸漏盡知」 ("seeing with wisdom that all outflows are exhausted"; also known as 「知見有漏斷」, "knowledge and vision whereby the defiled outflows are cut off").
3. The Extremely Precise "Threefold Classification of Sages"
To guard against posterity blurring concepts, the scriptures (e.g., 《中阿含經》 *Madhyama-āgama*, 《雜阿含經》 *Saṃyukta-āgama*) establish a strict coordinate system, dividing sages who possess either deep concentration or high wisdom into three classes: * 慧解脫阿羅漢 (prajñā-vimukta arhat, "wisdom-liberated arhat"): Wisdom perfected, defilements completely exhausted (有漏斷知), but unable to fully attain the eight liberations through 「身作證」 (unable to enter the attainment of cessation). * 身證聖者 (kāya-sākṣin sage, "bodily-witness sage"): Able to fully attain the eight liberations through 「身作證」, even entering the attainment of cessation, but wisdom not yet completely perfected and defilements not yet exhausted (still requiring 行无放逸). * 俱解脫阿羅漢 (ubhayatobhāga-vimukta arhat, "both-sided liberated arhat"): Simultaneously possessing both the bodily witness of the eight liberations and the wisdom that exhausts all outflows.
In a gathering of five hundred arhats in the Buddha's time, the proportions of these three categories are clearly recorded: 「九十比丘得三明，九十比丘得俱解脫，餘者慧解脫」 ("Ninety monks attained the three knowledges, ninety monks attained both-sided liberation, the rest attained wisdom liberation"). This shows that even among already-liberated sages, the both-sided liberator is extremely rare — an exceptionally eminent master of both concentration and wisdom. Because they can never again produce defilements, the Buddha explicitly stated that for both-sided liberators there is no need to proclaim 行无放逸 — for it is absolutely impossible for them to act negligently again.
A Walkthrough in Daily Life
To prevent 「俱解脫」 from becoming a vague mythological term, we can use the most familiar life scenarios of contemporary people, tracing along the operations of the 五陰 (pañcaskandha, the five aggregates) — 「色、受、想、行、識」 — and of 「定、慧」 (concentration and wisdom), and conduct an extremely rigorous practical walkthrough.
Scenario: Late-Night Overtime and Rage at Being Rejected
Suppose you work at a high-pressure internet company. At 2 a.m., the project proposal you revised seven times gets torn apart by your manager in a group chat, with your competence questioned.
1. Common Misprojections and the Entangled State: * 色蘊 (rūpa-skandha, the form aggregate — matter and body): By no means just "your physical body." It includes your racing heartbeat, rising blood pressure, tightening stomach, as well as the glowing text on the phone screen, the cold office environment in the dead of night (all forms composed of the four great elements and what is derived from them). * 受蘊 (vedanā-skandha, the feeling aggregate — receiving and experiencing): The moment you see the group message, the extreme physical discomfort and psychological suffering (pain, humiliation, agitation) that arise. * 想蘊 (saṃjñā-skandha, the perception aggregate — grasping marks and labeling): Not vaguely "thoughts," but "grasping marks and labeling." Your brain rapidly captures "the manager's name," "the critical words," and immediately applies labels — "He's targeting me," "This is an insult to me." * 行蘊 (saṃskāra-skandha, the volition aggregate — mental formation): Not external actions, but the inner motivations and volitional drives. The impulse to fight back surging wildly in your heart, the intention to quit and throw things, or the impulse to sink into self-doubt. * 識蘊 (vijñāna-skandha, the consciousness aggregate — discriminative awareness): Integrating the above form, feeling, perception, and volition into a unified conscious experience — "I am being harmed, I am furious."
2. The Ordinary Person's Quagmire and "Pseudo-Liberation": * 凡夫 (pṛthagjana, the ordinary person): Enslaved by the mark-grasping of the perception aggregate, lashing out under the drive of the volition aggregate, breaking down at 3 a.m., thoroughly kidnapped by the five aggregates. * Pseudo-"concentration" practitioner (contemporary escapism): Attempting to numb oneself by scrolling short videos, drinking, or forcibly suppressing emotions and "sitting in meditation to calm down." This is only temporary anesthesia; it does not cut off the root of affliction. * Pseudo-"wisdom" practitioner (contemporary cognitive therapy / intellectualization): Muttering "it's just work, not worth getting angry about," understanding many principles intellectually, yet when the next message comes a second later, the body (form aggregate) and emotions (feeling aggregate) still churn violently. This is what is called 「理通文脊，遇境依然迷」 ("the principle flows through the text, yet face-to-face with a situation one is still lost").
3. Mapping and Contrast with 「俱解脫」: If we map the state of a both-sided liberator onto a contemporary scene: * On the wisdom side (the foundation of wisdom-liberation): When an extremely adverse circumstance (form aggregate) and painful feeling (feeling aggregate) strike, his wisdom pierces through in an instant like a sharp sword: all the stimuli before his eyes, the physiological reactions in his body, the conceptual labels in his brain (perception aggregate), the volitional tendencies in his heart (volition aggregate) — all are phenomena of instantaneous arising and ceasing, impermanent, selfless, flowing and changing. There is no fixed "I" being insulted, nor a fixed "manager" inflicting harm. Craving and aversion are completely evaporated at the very moment of their sprouting. 「諸漏盡知」 ("all outflows are known to be exhausted") — not a grain of afflictive poison remains. * On the concentration side (the ultimate of bodily witness): Not only does he see through selflessness intellectually, his mind possesses an extremely formidable freedom of control. If he so wishes, he can in an instant withdraw his consciousness completely from the extremely chaotic material realm (the realm of form, the formless realm), traveling freely through the sphere of infinite space, the sphere of infinite consciousness, and even entering the 「想知滅解脫」 (the liberation of the cessation of perception and feeling, the attainment of cessation) where feeling and perception are completely extinguished. In his eyes, the clamor and pressure of the world are nothing but a wisp of dust drifting through empty space.
Through this walkthrough, the point where most people misproject becomes clear: Never mistake 「俱解脫」 for a "psychotherapist skilled in meditation techniques," and never think that "understanding the principle of no-self" is both-sided liberation. The former has only shallow concentration; the latter has only weak dry wisdom (乾智慧, intellectual understanding not nourished by deep meditative absorption).
Why Contemporary People Need It
Contemporary life is an era of being intensely kidnapped by "algorithms and anxiety." In contemporary experience, we can readily find reference points to contrast with 「俱解脫」 — for example, AI and brain science.
1. Breaking Through the Contemporary "One-Dimensional Predicament"
Contemporary people easily fall into two extremes: * Extreme one (technological coldness / extreme rationality): Like a rational algorithm, mastering all worldly logic and knowledge (resembling only a certain arid cognition), yet utterly lacking deep settling of body-mind experience; at the first major setback, body and mind collapse completely. * Extreme two (experiential escapism / meditation fervor): Contemporary culture is full of Soundbaths, mindfulness-based stress reduction, and deep meditation. Many people indulge in the brief calm brought by meditation (resembling shallow experiences of concentration), yet once they return to complex real-world relationships, afflictions and attachments remain exactly as before.
The concept of 「俱解脫」 sets an extraordinarily lofty benchmark for contemporary people: true freedom of body and mind can be achieved neither by cold intellectual analysis nor by numbed experiential avoidance. It demands that we achieve a perfect unity between extremely deep mastery of body and mind (concentration) and extremely acute penetration of truth (wisdom).
2. Comparison and Limitations with Contemporary Science (Brain Science / AI)
Contemporary brain science, through functional magnetic resonance imaging (fMRI) research, has found that long-term meditators show significantly reduced activity in the brain's default mode network (DMN), and markedly reduced amygdala activation related to depression and anxiety; artificial intelligence (AI), meanwhile, demonstrates pure logical processing and information analysis capabilities that surpass human beings.
However, scientific analogy is by no means equivalent to Buddhist truth, and its limitations are extremely obvious: * Limitations of brain science: Brain science can currently only observe changes in neuronal electrical signals and blood oxygen concentration (at the level of material form, the form aggregate) during meditation or emotional shifts. As for the 「無量識處」 (sphere of infinite consciousness), 「無所有處」 (sphere of nothingness), and even the 「滅盡定」 (attainment of cessation) in which perception and feeling are completely extinguished — brain science can neither fully define them with physical instrumental metrics, nor explain the radical subjective liberation of "completely extinguishing all ignorance and defiled outflows." Brain science can record a "calm brain," but cannot manufacture "a sage in whom hatred never arises." * Limitations of AI: AI possesses powerful data retrieval and logical reasoning, appearing to possess a very high-dimensional "wisdom." But AI has no "feeling (受蘊)" or "subjective awareness (識蘊)" at all, let alone "bodily witnessing" its way through the suffering and impermanence of life. AI's freedom from affliction is because it has no mind; the both-sided liberator's freedom from affliction is because 心善解脫 ("his mind is well liberated").
Understanding 「俱解脫」 allows contemporary people, while embracing technology and brain science, to clearly recognize that deep within the human mind there remains an extremely vast dimension of liberation that physics has not yet fully covered.
Common Misreadings and Clarifications
Regarding this advanced concept of 「俱解脫」, contemporary readers and practitioners easily fall into several deep misreadings that must be thoroughly clarified:
Misreading One: Equating 「俱解脫」 with "a master who plays with supernormal powers and can fool people"
Clarification: Although scriptures record that some both-sided liberators possess supernormal powers such as 「他心智」 (paracitta-jñāna, knowledge of others' minds) (e.g., the novice in the 《雜阿含經》 who displayed miraculous transformations and knew the king's mind), supernormal powers are by no means the essence of both-sided liberation. The core definition of both-sided liberation is always two points: bodily witness of the eight liberations and the exhaustion of defiled outflows. The scriptures record numerous wisdom-liberated arhats who likewise lack elaborate supernormal powers, yet like the both-sided liberators, they are the highest sages who have completely exhausted defilements and will not be reborn again. If one pursues exotic abilities apart from "exhausting craving and attachment," one merely falls into the wrong concentration of worldly non-Buddhist paths, entirely unrelated to both-sided liberation.
Misreading Two: Thinking that 「慧解脫」 is inferior to 「俱解脫」, or that "wisdom-liberated ones have not exhausted defilements"
Clarification: This is a severe narrowing of the sages' attainments. On the fundamental goal of liberating from birth and death and eradicating defilements (「漏盡」, āsravakṣaya, exhaustion of outflows), the wisdom-liberated arhat and the both-sided liberated arhat are completely equal. Both have thoroughly "seen with wisdom that all outflows are exhausted," both can never again act negligently, and both have permanently cut off birth and death. The only difference between the two lies in their past karmic connections with meditative concentration and their differing cultivation paths: the both-sided liberator additionally cultivated the extremely deep eight liberations (including the attainment of cessation), while the wisdom-liberated one, relying on basic concentration such as 未到地定 (anāgamya-samādhi, access concentration) or 初禪 (prathama-dhyāna, the first meditative absorption), directly pierced through the five aggregates with extremely acute wisdom to attain liberation.
Misreading Three: Thinking that 「身證」 is a transitional state toward 「俱解脫」, and that sufficiently deep concentration automatically becomes both-sided liberation
Clarification: The scriptures (e.g., the 《中阿含經》) rigorously distinguish 「身證」 from 「俱解脫」. A bodily-witness sage can enter the eight liberations through 「身作證」, and even enter the attainment of cessation, but he has not yet completely exhausted all defiled outflows through wisdom. If a bodily-witness practitioner indulges in the bliss of deep concentration and fails to contemplate and break attachment with the wisdom of the impermanence of the five aggregates, he still cannot become a both-sided liberator, and may even need to be admonished to "practice without negligence" (行无放逸). Concentration itself is merely a tool; only when combined with the contemplative wisdom that completely cuts off ignorance and attachment can deep concentration be transformed into genuine 「俱解脫」.