if one can access and exert mastery over the universality of buddhi, one has full knowledge of and control over all its evolutes, namely, the entirety of material and psychic phenomena. The claim to omniscience is thus internally consistent with the metaphysics of the Sāṅkhyan system.
Bryant argues that within Sāṅkhya-Yoga metaphysics omniscience is a rigorously logical outcome of transcending the kleśas and accessing universal buddhi, not a mystical fantasy.
, The Yoga Sutras of Patanjali: A New Edition, Translation, and Commentary, 2009thesis