Sakshi

Sakshi, Sanskrit for witness, names the pure awareness that observes the mind's activity, the body's sensations and the world's changing contents without itself participating in or being altered by any of it, a concept central to both Advaita Vedanta and the dualist Samkhya philosophy that influenced classical Yoga. In Samkhya, the witness is purusha, pure consciousness, categorically distinct from prakriti, the entirety of active, changing nature including the mind and its thoughts; liberation on this account is the witness recognizing itself as forever separate from the activity it merely observes.

Advaita Vedanta uses sakshi in a structurally similar way as a teaching device, pointing students toward the observing awareness present in every state, waking, dreaming and sleeping, as a first step toward recognizing turiya, though Advaita ultimately treats even the distinction between witness and witnessed as provisional, a useful stage on the way to the deeper non dual claim that witnessing awareness and its apparent objects are, at the most fundamental level, not actually two separate things. The term appears throughout classical yoga and Vedanta commentary as a technical anchor point, distinguishing the unchanging observer from the observed contents of mind that Samkhya groups together under the single heading of prakriti.

Sakshi bhava, the witness attitude, is widely taught in contemporary yoga and Vedanta influenced meditation as a practical technique, observing thoughts and feelings as they arise without immediately identifying with or reacting to them, a method that gives the ancient philosophical concept a directly applicable contemplative use.

Where Samkhya and Advaita part company is in where this practice is understood to end: Samkhya's dualism treats the witness as a permanently separate, real entity, purusha, whose recognition of its own difference from prakriti is itself the goal and the final state of liberation, kaivalya, isolation. Advaita treats the witness stance as an intermediate teaching, useful and even necessary at a certain stage, but ultimately to be seen through rather than settled into, since the tradition's final claim is that witness and witnessed, like waking and dreaming, are appearances within a single non dual reality rather than two permanently distinct principles. This difference over the witness's final status is one of the clearest technical markers separating Samkhya's classical dualism from Advaita's non dualism, two positions that otherwise share a great deal of vocabulary and practice in common.