Mahabharata 14.35.2

14.35.2

vāsudeva uvāca |
atrāpyudāharantīmamitihāsaṃ purātanam |
saṃvādaṃ mokṣasaṃyuktaṃ śiṣyasya guruṇā saha || 2 ||

"Vasudeva said,--'In this connection is recited the old history of the discourse between a preceptor and his disciple on the subject of Brahman. Once on a time, O scorcher of foes, an intelligent disciple questioned a certain Brahmana of rigid vows who was his preceptor, as he was seated (at his ease), saying,--What, indeed, is the highest good? Desirous of attaining to that which constitutes the highest good, I throw myself at thy feet, O holy one. O learned Brahmana, I solicit thee, bending my head, to explain to me what I ask.--Unto that disciple, O son of Pritha, who said so, the preceptor said,--O regenerate one, I shall explain to thee everything about which thou mayst have any doubts.--Thus addressed, O foremost one of Kuru's race, by his preceptor, that disciple who was exceedingly devoted to his preceptor, spoke as follows, with joined hands. Do thou hear what he said, O thou of great intelligence.'