Mbh 13.6.4a

"'"'In olden times, Yayati, falling from his high estate in heaven descended on the Earth but was again restored to the celestial regions by the good deeds of his virtuous grandsons. The royal sage Pururavas, celebrated as the descendant of Ila, attained to heaven through the intercession of the Brahmanas. Saudasa, the king of Kosala, though dignified by the performance of Aswamedha and other sacrifices, obtained the status of a man-eating Rakshasa, through the curse of a great Rishi. Aswatthaman and Rama, though both warriors and sons of Munis, failed to attain to heaven by reason of their own actions in this world. Vasu, though he performed a hundred sacrifices like a second Vasava, was sent to the nethermost regions, for making a single false statement. Vali, the son of Virochana, righteously bound by his promise, was consigned to the regions under the Earth, by the prowess of Vishnu. Was not Janamejaya, who followed the foot-prints of Sakra, checked and put down by the gods for killing a Brahmana woman? Was not the regenerate Rishi Vaisampayana too, who slew a Brahmana in ignorance, and was polluted by the slaughter of a child, put down by the gods? In olden times the royal sage Nriga became transmuted into a lizard. He had made gifts of kine unto the Brahmanas at his great sacrifice, but this availed him not. The royal sage Dhundhumara was overwhelmed with decrepitude even while engaged in performing his sacrifices, and foregoing all the merits thereof, he fell asleep at Girivraja. The Pandavas too regained their lost kingdom, of which they had been deprived by the powerful sons of Dhritarashtra, not through the intercession of the fates, but by recourse to their own valour. Do the Munis of rigid vows, and devoted to the practice of austere penances, denounce their curses with the aid of any supernatural power or by the exercise of their own puissance attained by individual acts?