Shatapatha Brahmana 6.8.1.14

6.8.1.14

pra prāyamagnirbharatasya śṛṇva iti | prajāpatirvai bharataḥ sa hīdaṃ sarvam bibharti vi yatsūryo na rocate bṛhadbhā iti vi yatsūrya iva rocate bṛhadbhā ityetadabhi yaḥ pūrum pṛtanāsu tasthāviti pūrurha nāmāsurarakṣasamāsa tamagniḥ pṛtanāsvabhitaṣṭhau dīdāya daivyo atithiḥ śivo na iti dīpyamāno daivo 'tithiḥ śivo na ityetatsthitavatyā vasatyai hyenaṃ tatsthāpayati

[He puts it on, with Vâg. S. XII, 34; Rik S. VII, 8, 4] 'Far, far famed is this Agni of the Bharata (tribe),'--the Bharata, doubtless, is Pragâpati, for he sustains (bhar) this entire (universe);--'that his great light shineth brightly, as the sun,'--that is, 'that, like the sun, his great light shines brightly;'--'he who overthrew Pûru in battles,'--Pûru, by name, was an Âsura-Rakshas: him Agni overthrew (abhi-sthâ) in battles;--'blazed up hath the divine guest, gracious unto us;'--that is, 'being kindled, the divine guest is gracious to us.' With a (verse) containing (the verb) 'sthâ' (he performs), for he thereby makes him stop (sthâ) for (staying at) his home.