(1) The cognitive faculty within a cognition, asserted in the Sautrantika and Chittamatra tenet systems, that takes as its cognitive object the consciousness within the cognition that it is part of. It also cognizes the validity or invalidity of the cognition that it is part of, and accounts for the ability to recall the cognition. (2) In the non-Gelug schools, this cognitive faculty becomes reflexive deep awareness – that part of an arya's non-conceptual cognition of voidness that cognizes the two truths of that non-conceptual cognition.
Tibetan: རང་རིག rang-rig
J. Hopkins: Self-knowing