Mbh 13.70.1a

"'Bhishma said, "In this connection, O perpetuator of Kuru's race, is recited by the righteous the narrative of the great calamity that overtook king Nriga in consequence of his spoliation of what had belonged to a Brahmana. Some time before, certain young men of Yadu's race, while searching for water, had come upon a large well covered with grass and creepers. Desirous of drawing water from it, they laboured very much for removing the creepers that covered its mouth. After the mouth had been cleaned, they beheld within the well a very large lizard residing within it. The young men made strong and repeated efforts for rescuing the lizard from that situation. Resembling a very hill in size, the lizard was sought to be freed by means of cords and leathern tongs. Not succeeding in their intention the young men then went to Janardana. Addressing him they said, 'Covering the entire space of a well, there is a very large lizard to be seen. Notwithstanding our best efforts we have not succeeded in rescuing it from that situation.' Even this was what they represented unto Krishna. Vasudeva then proceeded to the spot and took out the lizard and questioned it as to who it was. The lizard said that it was identical with the soul of king Nriga who had flourished in days of old and who had performed many sacrifices. Unto the lizard that said those words, Madhava spoke, 'Thou didst perform many righteous acts. No sin didst thou commit. Why, then, O king, hast thou come to such a distressful end? Do thou explain what this is and why it has been brought about. We have heard that thou didst repeatedly make gifts unto the Brahmanas of hundreds upon hundreds of thousands and once again eight times hundreds upon hundreds of ten thousands of kine.[351] Why, therefore, has this end overtaken thee?