Mbh 15.20.2a

"'Narada said, "There was a ruler of the Kekayas, possessed of great prosperity and perfectly fearless. His name was Sahasrachitya and he was the grandfather of this Satayupa. Resigning his kingdom to his eldest son endued with a large measure of righteousness, the virtuous king Sahasrachitya retired into the woods. Reaching the other end of blazing penances, that lord of Earth, endued with great splendour, attained to the region of Purandara where he continued to live in his company. On many occasions, while visiting the region of Indra, O king, I saw the monarch, whose sins had all been burnt off by penances, residing in Indra's abode. After the same manner, king Sailalaya, the grandfather of Bhagadatta, attained to the region of Indra by the power alone of his penances. There was another king, O monarch, of the name of Prishadhra who resembled the wielder of the thunder-bolt himself. That king also, by his penances proceeded from the Earth to Heaven. In this very forest, O king, that lord of Earth, Purukutsa, the son of Mandhatri, attained to high success. That foremost of rivers, viz., Narmada, became the consort of that king. Having undergone penances in this very forest, that ruler of Earth proceeded to Heaven. There was another king, highly righteous, of the name of Sasaloman. He too underwent severe austerities in this forest and then ascended to Heaven. Thou also, O monarch, having arrived at this forest, shalt, through the grace of the Island-born, attain to a goal that is very high and that is difficult of attainment. Thou also, O foremost of kings, at the end of thy penances, become endued with great prosperity and, accompanied by Gandhari, attain to the goal reached by those high-souled ones. Dwelling in the presence of the slayer of Vala, Pandu thinks of thee always. He will, O monarch, certainly assist thee in the attainment of prosperity.