Shatapatha Brahmana 11.5.1.10

11.5.1.10

yadvirūpācaram martyeṣvavasaṃ rātrīḥ śaradaścatasraḥ ghṛtasya stokaṃ sakṛdahnu āśnāṃ tādevedaṃ tātṛpāṇā carāmīti tadetaduktapratyuktam pañcadaśarcam bahvṛcāḥ prāhustasyai ha hṛdayamāvyayāṃ cakāra

(Rig-veda X, 95, 16), 'When changed in form, I walked among mortals, and passed the nights there during four autumns ate a little ghee, once a day, and even now I feel satisfied therewith.'--This discourse in fifteen verses has been handed down by the Bahvrikas. Then her heart took pity on him.