Jain Philosophy and Sāṃkhya — Karma as Matter vs Karma as Guṇa-Motion

Two of Indian philosophy's great atheistic traditions — Jainism and Sāṃkhya — share more than is often recognised. Both affirm the reality of individual souls (jīva / Puruṣa). Both accept karma and rebirth. Both locate the problem of bondage in something that accretes to or involves the soul. Both see liberation as the soul's return to its own intrinsic nature — pure awareness, pure being.

Both are detailed metaphysical systems with complete ontologies: Jainism's six dravyas (jīva, pudgala, dharma, adharma, ākāśa, kāla) and Sāṃkhya's 25 tattvas from Puruṣa through the mahat to the five elements.

Jainism: karma is literally physical matter (kārmaṇa-vargaṇā) — the subtlest grade of pudgala (matter). It adheres to the soul through the force of passions and obscures the soul's natural omniscience. Liberation requires physically shedding all accumulated karma.

Sāṃkhya: karma operates through the guṇas — the three qualities (sattva, rajas, tamas) that constitute Prakṛti. 'Karma' in the sense of action and its consequences is a matter of guṇa-modulation in the buddhi (intellect). Puruṣa itself is always free — its apparent bondage is the confusion of Puruṣa with the guṇa-play of Prakṛti.

The deepest difference: for Jainism, the soul (jīva) is genuinely bound — karma literally attaches to it. Liberation is a real process of physical purification. The soul at liberation is genuinely different from the soul in bondage — all karma has been shed.

For Sāṃkhya, the Puruṣa was never bound. Bondage is an appearance — the confusion of Puruṣa (pure consciousness) with Prakṛti (the unconscious material principle). Liberation (kaivalya) is the realisation that Puruṣa was always separate from Prakṛti. No karma attaches to Puruṣa; what appeared as karma was Prakṛti's activity mistaken for Puruṣa's.

Jainism: the individual jīva is real, eternally distinct, and at liberation rests at the apex of the universe in its intrinsic omniscient nature. Many liberated jīvas, all distinct.

Sāṃkhya: there are many Puruṣas — but at liberation, each simply abides in its own nature as pure witness-consciousness, distinct from Prakṛti. No omniscience — Puruṣa is pure but contentless.

Jainism: the siddha — the liberated soul that has shed all 148 types of karma, risen to Siddhaloka, and rests in omniscience, infinite bliss, and infinite energy. Permanent.

Sāṃkhya: kaivalya — the standing-alone of Puruṣa, its complete dis-identification from Prakṛti. Prakṛti, recognising it has served its purpose for that Puruṣa, ceases to generate experiences for it.

Two atheistic Indian philosophies that agree on almost all structural points but differ on the nature of karma's relationship to the soul. The difference matters for practice: if karma physically accretes, the path is physical purification through tapas and ahiṃsā. If Puruṣa was never bound, the path is discriminative knowledge (vivekakhyāti) — realising what was always true. Same liberation, genuinely different metaphysics of the path.