Mbh 9.41.1b

Observant of rigid vows, the great Dalvya Vaka, O monarch, poured Dhritarashtra's kingdom as a libation on the fire, with the aid of those pieces of meat. Upon the commencement of that fierce sacrifice according to due rites, the kingdom of Dhritarashtra, O monarch, began to waste away. Indeed, O lord, the kingdom of that monarch began to waste away, even as a large forest begins to disappear when men proceed to cut it down with the axe. Overtaken by calamities, the kingdom began to lose its prosperity and life. Seeing his kingdom thus afflicted, the puissant monarch, O king, became very cheerless and thoughtful. Consulting with the Brahmanas, he began to make great endeavours for freeing his territories (from affliction). No good, however, came of his efforts, for the kingdom continued to waste away. The king became very cheerless. The Brahmanas also, O sinless one, became filled with grief. When at last the king failed to save his kingdom, he asked his counsellors. O Janamejaya, (about the remedy). The counsellors reminded him of the evil he had done in connection with the dead kine. And they said, 'The sage Vaka is pouring thy kingdom as a libation on the fire with the aid of the flesh (of those animals). Thence is this great waste of thy kingdom! This is the consequence of ascetic rites. Thence is this great calamity! Go, O king, and gratify that Rishi by the side of a receptacle of water on the bank of the Sarasvati!' Repairing to the bank of the Sarasvati, the king falling at his feet and touching them with his head, joined his hands and said, O thou of Bharata's race, these words, 'I gratify thee, O adorable one, forgive my offence. I am a senseless fool, a wretch inspired with avarice. Thou art my refuge, thou art my protector, it behoveth thee to show me thy grace!' Beholding him thus overwhelmed with grief and indulging in lamentations like these, Vaka felt compassion for him and freed his kingdom.