Verse 27

हृद्गुहावासिचित्तत्त्वं मुख्यं सानातनं वपुः ।शङ्खचक्रगदाहस्तो गौण आकार आत्मनः

In plain words

The cit-tattva dwelling in the cave of the heart is the chief, the eternal body; the form with conch, discus, and mace in hand is the secondary form of the ātman.