Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.3.1

2.3.3.1

yatra vai prajāpatiḥ prajāḥ sasṛje | sa yatrāgniṃ sasṛje sa idaṃ jātaḥ sarvameva dagdhuṃ dadhra ityevābilameva tā yāstarhi prajā āsustā hainaṃ sampeṣṭuṃ dadhrire so 'titikṣamāṇaḥ puruṣamevābhyeyāya

Now when Pragâpati, in creating living beings, created Agni, the latter, as soon as born, sought to burn everything here: and so everybody tried to get out of his way. The creatures then existing sought to crush him. Being unable to endure this, he went to man.