During dreamless sleep, the individual soul (jiva) enters and revels in the region of bliss (ananda-loka), led thereto by the splendour of the upward breath, the vital air that elevates. The region of bliss is known also as the region of Brahma (Brahmaloka). During sleep, one effortlessly gets this splendid chance to enjoy the proximity of the supreme Atma, which is the prime source and substance of the five basic elements, the five senses, and the inner instrument of awareness (the five bhutas, the five indriyas and the Antahkarana). But this experience is quite temporary and doesn’t last. (Sutra Vahini, pp. 52-53)