Mahabharata 13.57.4

13.57.4

vayaṃ hi tāngurūnhatvā jñātīṃśca suhṛdo'pi ca |
avākśīrṣāḥ patiṣyāmo narake nātra saṃśayaḥ || 4 ||

"Yudhishthira said, 'Hearing thy words I become stupefied, O grandsire! Reflecting that the earth is now destitute of a very large number of kings all of whom were possessed of great prosperity, my heart becomes filled with grief. Having conquered the earth and acquired kingdoms numbered by hundreds, O Bharata, I turn with grief, O Grandsire, at the thought of the millions of men I have slaughtered. Alas, what will be the plight of those foremost ladies who have been deprived by us of husbands and sons and maternal uncles and brothers? Having slain those Kurus--our kinsmen, that is, our friends and well-wishers,--we shall have to sink in hell, beads (hanging) downwards. There is no doubt of this. I desire, O Bharata, to address my body to severe penances. With that end in view, O king, I wish to receive instructions from thee.'