Mahāyoga: That meditation in which the pure form appears without colour, which is auspicious, independent, and unspecifiable, which has light and splendour always and is self-evident all round is called Mahāyoga. The Atman alone pure and self-luminous[1] rises perpetually (in it). Self-luminosity, that is pure is known as Mahāyoga. It comes up from the entire mind.