Śatapatha Brāhmaṇa ("of a hundred paths") 3.4.2.1

3.4.2.1

ātithyena vai devā iṣṭvā | tāntsamadavindatte caturdhā vyadravannanyo 'nyasya śriyā atiṣṭhamānā agnirvasubhiḥ somo rudrairvaruṇa ādityairindro marudbhirbṛhaspatirviśvairdevairityu haika āhurete ha tveva te viśve devā ye te caturdhā vyadravaṃstānvidrutānasurarakṣānyanuvyaveyuḥ

When the gods had performed the guest-offering, discord befell them. They separated into four different parties, unwilling to yield to each other's excellence,--Agni, with the Vasus, Soma with the Rudras, Varuna with the Âdityas, and Indra with the Maruts. Brihaspati with the All-gods, say some, but, indeed, those who separated into four parties were 'all the gods.' When they were separated, the Asura-Rakshas came after them and entered between them.