Mbh 5.120.1

“Narada said, ‘King Yayati then, desirous again of disposing of his daughter in Swayamvara, went to a hermitage on the confluence of the Ganga and the Yamuna, taking Madhavi with him on a chariot, her person decked with garlands of flowers. And both Puru and Yadu followed their sister to that sacred asylum. And in that spot was assembled a vast concourse of Nagas and Yakshas and human beings, of Gandharvas and animals and birds, and of dwellers of mountains and trees and forests, and of many inhabitants of that particular province. And the woods all around that asylum were filled with numerous Rishis resembling Brahman himself. And while the selection had commenced of husband, that maiden of the fairest complexion, passing over all the bridegrooms there assembled, selected the forest as her lord. Descending from her chariot and saluting all her friends, the daughter of Yayati went into the forest which is always sacred, and devoted herself to ascetic austerities. Reducing her body by means of fasts of various kinds and religious rites and rigid vows, she adopted the deer’s mode of life. And subsisting upon soft and green grass-blades, resembling the sprouts of lapis lazuli and which were both bitter and sweet to the taste, and drinking the sweet, pure, cool, crystal, and very superior water of sacred mountain-streams, and wandering with the deer in forests destitute of lions and tigers, in deserts free from forest-conflagration, and in thick woods, that maiden, leading the life of a wild doe, earned great religious merit by the practice of Brahmacharya austerities.