Mahabharata 11.26.7

11.26.7

dhṛtarāṣṭrastu rājarṣirnigṛhyābuddhijaṃ tamaḥ |
paryapṛcchata dharmātmā dharmarājaṃ yudhiṣṭhiram || 7 ||

Vaishampayana said, "Hearing these words of Vasudeva that were disagreeable to her, Gandhari, with heart exceedingly agitated by grief, remained silent. The royal sage Dhritarashtra, however, restraining the grief that arises from folly, enquired of Yudhishthira the just, saying, ‘If, O son of Pandu, thou knowest it, tell me the number of those that have fallen in this battle, as also of those that have escaped with life!’