Śatapatha Brāhmaṇa ("of a hundred paths") 4.2.3.14

4.2.3.14

indrāgnibhyāṃ tvā | devāvyaṃ yajñasyāyuṣe gṛhṇāmītyevācāvākāyaindrāgnīṣu hi tasmai stuvata aindrāgnīranuśaṃsatyaindrāgnyā yajatīndrāya tvetyeva mādhyandine savana aindraṃ hi mādhyandinaṃ savanam

With, 'Thee, the god-pleasing, I take for Indra and Agni, for the life of the sacrifice!' (he takes the portion) for the Akhâvâka; for in verses to Indra and Agni praises are chanted for this (libation); and verses to Indra and Agni are afterwards recited as a sastra, and offering is made with a verse to Indra and Agni. With, 'Thee.... for Indra,' he performs at the midday feast, for the midday feast is sacred to Indra.