Shatapatha Brahmana 4.5.1.13

4.5.1.13

athodavasānīyayeṣṭyā yajate | sa āgneyam pañcakapālam puroḍāśaṃ nirvapati tasya pañcapadāḥ paṅktayo yājyānuvākyā bhavanti yātayāmeva vā etadījānasya yajño bhavati so 'smātparāṅiva bhavatyagnirvai sarve yajñā agnau hi sarvānyajñāṃstanvate ye ca pākayajñā ye cetare tadyajñamevaitatpunarārabhate tathāsyāyātayāmā yajño bhavati tatho asmānna parāṅ bhavati

Thereupon he performs the Udavasânîyâ ishti (completing oblation). He prepares a cake on five potsherds for Agni. Its invitatory and offering prayers are five-footed paṅktis. For at this time the sacrifice of him who has sacrificed is, as it were, exhausted in strength: it, as it were, passes away from him. Now all sacrifices are Agni, since all sacrifices are performed in him, the domestic sacrifices as well as others. He thus takes hold again of the sacrifice, and thus that sacrifice of his is not exhausted in strength, and does not pass away from him.