Mahabharata 3.37.39

3.37.39

tataḥ kāmyakamāsādya punaste bharatarṣabhāḥ |
nyaviśanta mahātmānaḥ sāmātyāḥ sapadānugāḥ || 39 ||

Vaisampayana continued, "Having addressed him thus, that illustrious and exalted ascetic Vyasa, of great wisdom, acquired with the mysteries of the world, then imparted unto the willing Yudhishthira the just, who had meanwhile purified himself, that foremost of sciences. And bidding farewell unto the son of Kunti, Vyasa disappeared then and there. The virtuous and intelligent Yudhishthira, however, having obtained that knowledge carefully retained it in his mind and always recited it on proper occasions. Glad of the advice given him by Vyasa, the son of Kunti then, leaving the wood Dwaitavana went to the forest of Kamyaka on the banks of the Saraswati. And, O king, numerous Brahmanas of ascetic merit and versed in the science of orthoepy and orthography, followed him like the Rishis following the chief of the celestials. Arrived at Kamyaka, those illustrious bulls amongst the Bharata took up their residence there along with their friends and attendants. And possessed of energy, those heroes, O king, lived there for some time, devoted to the exercise of the bow and hearing all the while the chanting of the Vedas. And they went about those woods every day in search of deer, armed with pure arrows. And they duly performed all the rites in honour of the Pitris, the celestials and the Brahmanas."