Śatapatha Brāhmaṇa ("of a hundred paths") 2.2.1.22

2.2.1.22

athedaṃ dvitīyam | āgneyamevāṣṭākapālam puroḍāśaṃ nirvapati paro 'kṣamiva vāetadyadagnaye pavamānāyāgnaye pāvakāyāgnaye śucaya itīvāthāñjasaivainametatpratyakṣamādhatte tasmādagnaye 'thādityai caruṃ nirvapati sa ya eva carorbandhuḥ sa bandhuḥ

Then there is this other. He simply offers a cake on eight potsherds to Agni, and thereby, implicitly, to Agni Pavamâna, Agni Pâvaka, and Agni Suki; and immediately after he visibly sets him up (as Agni). For this reason he offers (a cake) to Agni, and then a potful of boiled rice to Aditi. The treatment of the potful of rice (in that case) is the same (as before).