The Great Epic of the Bhārata dynasty 3.78.16

3.78.16

vaiśaṃpāyana uvāca |
tato hṛṣṭamanā rājā bṛhadaśvamuvāca ha |
bhagavannakṣahṛdayaṃ jñātumicchāmi tattvataḥ || 16 ||

Vaisampayana continued, "King Yudhishthira then, with a glad heart, said unto Vrihadaswa, 'O illustrious one, I desire to learn the science of dice from thee.' The Rishi then gave his dice-lore unto the high-souled son of Pandu, and having given it unto him, that great ascetic went to the sacred waters of Hayasirsha for a bath.