Śatapatha Brāhmaṇa ("of a hundred paths") 1.4.2.17

1.4.2.17

atha yathādevatam | devāṃ ājyapāṃ āvaheti tatprayājānuyājānāvoḍhavā āha prayājānuyājā vai devā ājyapā agniṃ hotrāyāvaheti tadagniṃ hotrāyāvoḍhavā āha svaṃ mahimānamāvaheti tatsvam mahimānamāvoḍhavā āha vāgvā asya svo mahimā tadvācamāvoḍhavā āhā ca vaha jātavedaḥ suyajā ca yajeti tadyā evaitaddevatā āvoḍhavā āha tā evaitadāhā cainā vahānuṣṭhyā ca yajeti yadāha suyajā ca yajeti

And (in the same way) according to the respective deities. He then continues, 'Bring hither the butter-drinking gods!' this he says in order that he may bring hither the prayâgas and anuyâgas (fore and after-offerings), for the prayâgas and anuyâgas (represent) indeed the butter-drinking gods.--'Bring Agni hither for the Hotriship!' this he says in order that he may bring Agni hither for the office of Hotri.--'Your own greatness bring hither!' this he says in order that he (Agni) may bring hither his own greatness; his own greatness, in truth, is his voice: hence he says it in order that he may bring hither his voice.--'Bring thou hither (the gods), O Gâtavedas, and offer up a good offering!' what deities he bids him bring hither, with regard to those (deities) he thereby says 'bring them hither!' When he says, 'offer up a good offering!' he means to say, 'sacrifice in the proper order!'