As fire, whose nature is light, is covered over by smoke, born along with it, whose nature is not light; or as a mirror by dirt; or as an embryo is wrapped, covered, by the membrane, the caul that wraps the embryo: so by this is that covered. What, then, is the 'that' which is said to be covered by desire? He says.
Contemporary English rendering of the Sanskrit bhāṣya, pending scholar review.