Kṣara and Akṣara in the Mahābhārata

Kṣara means “that which perishes” and akṣara means “that which does not perish”. Together they form one of the central teachings of the Mokṣadharma Parva, the part of the Mahābhārata’s Śānti Parva that deals with mokṣa (liberation). Kṣara is everything that changes and falls apart, and that keeps a being bound to saṃsāra, the cycle of birth and death. Akṣara is what never changes and never ends. To recognise the akṣara as one’s true self is liberation.

This teaching is set out step by step in the Sāṃkhya-Kathanam (Chapter 301), the dialogue of Vasiṣṭha with King Karāla Janaka (Chapters 302–308), and the dialogue of Yājñavalkya with King Janaka (Chapters 310–318). The Bhagavad Gītā (Chapter 15) gives a related three-part teaching: kṣara, akṣara and puruṣottama. The Mokṣadharma Parva builds this into a detailed map. It separates the twenty-four tattvas (basic principles) of prakṛti (nature, the material world), which are kṣara; the puruṣa or ātman (the conscious self) as the twenty-fifth, which is akṣara in a relative sense within the Sāṃkhya system; and the paramātman (Supreme Self) as the twenty-sixth, the final akṣara beyond both.

The Basic Difference

Kṣara (from the root kṣar, “to flow, to decay”) is whatever can perish and change, and is subject to time and to cause and effect. The whole domain of prakṛti, from the gross mahābhūtas (great elements) to the subtle ahaṃkāra (sense of “I”), is kṣara. Whatever arose from a cause will be dissolved by a cause. Whatever is in time is acted upon by time. Whatever is made of parts will come apart. Kṣara is the realm of saṃsāra, the cycle of arising and dissolving that makes up bound existence.

Akṣara (from a + kṣara, “not perishing”) is whatever cannot perish, does not change, and is beyond cause and time. The akṣara is the domain of brahman (the Absolute), ātman and paramātman. It does not arise from a cause, so it cannot be dissolved. It is not in time, so time cannot act on it. It is not made of parts, so it cannot come apart. To recognise oneself as akṣara, rather than as kṣara, is the very substance of liberation.

The Twenty-Four Tattvas Are Kṣara

The Sāṃkhya-Kathanam (Chapter 301) and the dialogue of Vasiṣṭha and Karāla Janaka (Chapters 302–308) identify the whole kṣara domain with the twenty-four tattvas of the Sāṃkhya school of thought:

All twenty-four are kṣara. They arise from earlier causes, change in time, and dissolve back into the unmanifest. Even the avyakta, the subtlest of the twenty-four, is kṣara, because it is the material ground of everything that appears, not the witness of what appears.

The Twenty-Fifth: Puruṣa, Akṣara in a Relative Sense

The twenty-fifth principle, the puruṣa or ātman, is the witnessing awareness that lights up the field of the twenty-four without being part of it. Within the Sāṃkhya system, the puruṣa is akṣara compared with the twenty-four kṣara tattvas: it does not arise, change or dissolve. It is the nitya-sākṣī, the eternal witness. The path of yoga (prāṇāyāma or breath control, dhāraṇā or concentration, dhyāna or meditation, and samādhi or complete absorption) aims to reveal the puruṣa as clearly separate from the twenty-four, so that one no longer mistakes oneself for the field, but rests as the witness.

However, the dialogue of Vasiṣṭha and Karāla Janaka goes further. It teaches that even the twenty-fifth, the puruṣa, so long as it stands as a witness to the twenty-four, is not fully akṣara in the final sense. It is still in a subtle relationship with the kṣara domain.

The Twenty-Sixth: Paramātman, the Supreme Akṣara

The dialogue of Vasiṣṭha and Karāla Janaka brings in a twenty-sixth principle: the paramātman, the supreme akṣara. It is the ground of both the twenty-four (kṣara) and the twenty-fifth (puruṣa). The paramātman is beyond even the relationship between witness and field. It is the absolute, unconditioned reality from which both field and witness arise and in which both rest.

This matches the Bhagavad Gītā’s puruṣottama, “the supreme person”, who is beyond both kṣara and akṣara. Liberation in the fullest sense is realising the twenty-sixth: not only being the witness, the twenty-fifth, but letting even the difference between witness and field dissolve into the paramātman, where there is no second.

Three Stages of the Seeker

The dialogue of Vasiṣṭha and Karāla Janaka links the kṣara–akṣara teaching to three stages of the spiritual seeker:

1. Kṣara-stha (“standing in the perishable”): fully identified with the twenty-four tattvas. This is the ordinary being in saṃsāra, who takes the body, mind and ego to be “I”.
2. Akṣara-stha (“standing in the imperishable”): realised as the twenty-fifth, resting as the witnessing awareness, free from identifying with the twenty-four, but still in a subtle relationship with them.
3. Uttama or Paramātman-stha (“the highest”, “standing in the Supreme Self”): realised as the twenty-sixth, the paramātman beyond all differences, including the difference between witness and field. This is complete jīvanmukti, liberation while still living.

Moving through these three stages is the path of mokṣa. The yoga path mainly carries one from kṣara-stha to akṣara-stha, by seeing the twenty-four clearly as a witness. The jñāna (direct knowledge) of the twenty-sixth is the final dissolving.

In the Dialogue of Yājñavalkya and Janaka

The dialogue of Yājñavalkya and Janaka (Chapters 310–318) looks at kṣara and akṣara through the lens of time on the largest scale, including the lifespan of the avyakta itself. Yājñavalkya teaches Janaka that even the avyakta, the subtlest of the twenty-four, has a “day” (ending in pralaya, dissolution, at the close of each kalpa or great age) and a “life” (the full length of Brahmā’s hundred years). This shows that even the subtlest level of prakṛti is kṣara.

The akṣara that is truly beyond all time is the paramātman. Yājñavalkya gained the means of knowing this when he received the Śukla Yajurveda from Sūrya (Āditya), who revealed to him the teaching of niṣkala brahman, the brahman that is whole and without parts.

Sources

• Mahābhārata, Śānti Parva, Mokṣadharma Parva, Chapters 301–308 (Sāṃkhya-Kathanam and the dialogue of Vasiṣṭha and Karāla Janaka)
• Mahābhārata, Śānti Parva, Mokṣadharma Parva, Chapters 310–318 (dialogue of Yājñavalkya and Janaka)
• Bhagavad Gītā, Chapter 15