Mahabharata 13.71.2

13.71.2

nṛgeṇa ca yathā duḥkhamanubhūtaṃ mahātmanā |
ekāparādhādajñānātpitāmaha mahāmate || 2 ||

"Yudhishthira said, 'Thou hast, O grandsire, discoursed to me the topic of gifts of kine in speaking of the Rishi Nachiketa Thou hast also impliedly discoursed, O puissant one, on the efficacy and pre-eminence of that act. Thou hast also told me, O grandsire of great intelligence, of the exceedingly afflicting character of the calamity that overtook the high-souled king Nriga in consequence of a single fault of his. He had to dwell for a tong time at Dwaravati (in the form of a mighty lizard) and how Krishna became the cause of his rescue from that miserable plight. I have, however, one doubt. It is on the subject of the regions of kine. I desire to hear, in detail, about those regions which are reserved for the residence of persons that make gifts of kine.'