Shatapatha Brahmana 10.1.3.9

10.1.3.9

tasyā astyevāgneyam astyaindramasti vaiśvadevaṃ tadyadasyā āgneyaṃ yadevaitasyāgnerāgneyaṃ tadasya tena samaskurvanyadaindraṃ tadaindreṇa yadvaiśvadevaṃ tadvaiśvadevena tamatraiva sarvaṃ kṛtsnaṃ samaskurvan

Of this (verse) one part is Agni's, one part Indra's, and one part the All-gods’;--with that part thereof which is Agni's they made up that part of him (Pragâpati) which is Agni's, and with Indra's (part) that which is Indra's, and with the All-gods’ (part) that which is the All-gods’: in this very (fire-altar) they thus made him up wholly and completely.