Mbh 12.333.1

"'Bhishma said, "Having ascended the summit of the mountain, O Bharata, the son of Vyasa sat down upon a level spot free from blades of grass and retired from the haunts of other creatures. Agreeably to the direction of the scriptures and to the ordinances laid down, that ascetic, conversant with the gradual order of the successive processes of Yoga, held his soul first in one place and then in another, commencing from his feet and proceeding through all the limbs. Then when the Sun had not risen long, Suka sat, with his face turned Eastwards, and hands and feet drawn in, in an humble attitude. In that spot where the intelligent son of Vyasa sat prepared to address himself to Yoga, there were no flocks of birds, no sound, and no sight that was repulsive or terror-inspiring. He then beheld his own Soul freed from all attachments. Beholding that highest of all things, he laughed in joy.[1787] He once more set himself prepared to Yoga for attaining to the path of Emancipation. Becoming the great master of Yoga, he transcended the element of space. He then circumambulated the celestial Rishi Narada, and represented unto that foremost of Rishis the fact of his having addressed himself to the highest Yoga.