Nirvikalpa Samadhi

Nirvikalpa samadhi, samadhi without vikalpa, mental construct, names the deepest grade of meditative absorption recognized in classical yogic and Vedantic literature, a state in which even the subtle residue of distinction between the meditator and the object of meditation, still present in savikalpa samadhi, is said to disappear entirely, leaving what practitioners and texts describe as pure, undifferentiated awareness with no remaining sense of a separate self observing anything.

In Advaita Vedanta this state is treated as the closest a temporary meditative experience can come to directly tasting the tradition's ultimate claim, that the individual self and Brahman are not two, though Advaita teachers are careful to distinguish even nirvikalpa samadhi, as an experience that begins and ends, from sahaja samadhi or jivanmukti, a permanent, effortless realization that does not depend on remaining in a special meditative state at all. Ramakrishna, the nineteenth century Bengali mystic, is among the best documented modern practitioners reported to have entered nirvikalpa samadhi repeatedly and for extended periods, and accounts of his life became an influential modern reference point for what the state was understood to involve.

The distinction between nirvikalpa samadhi as a temporary state and sahaja samadhi as a permanent realization is treated in Advaita Vedanta as one of the most consequential points in the entire tradition, because it separates an extraordinary meditative achievement, real and valuable but reversible, from the tradition's actual soteriological goal, a change in self understanding so complete and stable that it persists through ordinary waking activity and does not depend on withdrawing from the world into formal meditation at all.

Some teachers within the tradition, including figures associated with the modern neo-Vedanta revival, have emphasized that a practitioner can, in rare cases, move directly to a stable, non-meditative realization without passing through repeated cycles of nirvikalpa samadhi, treating the formless absorption state as a common but not strictly necessary stage on the path rather than an indispensable prerequisite. Because nirvikalpa samadhi is, by definition, a state without differentiated content, first person accounts of it are necessarily reported only after the fact, by a mind that has returned to ordinary functioning, which is part of why textual descriptions of the state converge on its effects and its aftermath more than on any content experienced during it.