Śatapatha Brāhmaṇa ("of a hundred paths") 4.2.3.13

4.2.3.13

indrāya tvā | devāvyaṃ yajñasyāyuṣe gṛhṇāmītyeva brāhmaṇācaṃsina aindrīṣu hi tasmai stuvata aindrīranuśaṃsatyaindryā yajati

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