Śatapatha Brāhmaṇa ("of a hundred paths") 1.7.3.10

1.7.3.10

so 'nuvākyāmanūcya sampaśyati | ye tathāgniṃ sviṣṭakṛtamayāḍagniragneḥ priyā dhāmānīti tadāgneyamājyabhāgamāhāyāṭsomasya priyā dhāmānīti tatsaumyamājyabhāgamāhāyāḍagneḥ priyā dhāmānīti tadya eṣa ubhayatrācyuta āgneyaḥ puroḍāśo bhavati tamāha

Having recited the invitatory formula, he (the Hotri) enumerates (those deities) which (have received oblations at the fore-offerings, butter-portions, &c.), as well as Agni Svishtakrit:--'May Agni offer Agni's favourite dainties!' thereby he refers to Agni's butter-portion. 'May he offer Soma's favourite dainties!' thereby he refers to Soma's butter-portion.--'May he offer Agni's favourite dainties!' thereby he refers to that indispensable cake for Agni which is (offered) on both occasions (at the new- and full-moon sacrifices).