Śatapatha Brāhmaṇa ("of a hundred paths") 3.1.4.11

3.1.4.11

ākūtyai prayuje 'gnaye svāheti | nāta ekaṃ canāgnirvā addhevāgniḥ pratiṣṭhitaḥ sa yadagnau juhoti tenaivaitā addheva tena pratiṣṭhitāstasmādu sarvāsvevāgnaye svāheti juhoti tata etānyādhītayajūṃṣītyācakṣate

'To the Purpose, to the Impulse, to Agni, hail!'--not any one (god we obtain) from this! But Agni surely is definite, Agni is established: when he offers in Agni (the fire), surely those (libations) are thereby made definite, are thereby established: for this reason he offers at all libations with, 'To Agni, hail!' Moreover, these libations are called 'âdhîtayagûmshi.'