Shatapatha Brahmana 2.2.4.3

2.2.4.3

sa aikṣata prajāpatiḥ | annādaṃ vā imamātmano 'jījane yadagniṃ na vā iha madanyadannamasti yaṃ vā ayaṃ nādyāditi kālvālīkṛtā haiva tarhi pṛthivyāsa nauṣadhaya āsurna vanaspatayastadevāsya manasyāsa

Pragâpati then considered, 'In that Agni I have generated a food-eater for myself; but, indeed, there is no other food here but myself, whom, surely, he would not eat.' At that time this earth had, indeed, been rendered quite bald; there were neither plants nor trees. This, then, weighed on his mind.