ŚBM, 1, 4, 2, 16.2 tadasmai yajñāya devān āvoḍhavā āhāgnimagna āvaheti tadāgneyāyājyabhāgāyāgnim āvoḍhavā āha somamāvaheti tatsaumyāyājyabhāgāya somam āvoḍhavā āhāgnimāvaheti tadya eṣa ubhayatrācyuta āgneyaḥ puroḍāśo bhavati tasmā agnimāvoḍhavā āha //

ŚBM, 1, 5, 3, 22.2 svāhākāreṇaiva sarvaṃ yajñaṃ samasthāpayant svāhāgnimiti tad āgneyam ājyabhāgaṃ samasthāpayant svāhā somamiti tat saumyamājyabhāgaṃ samasthāpayant svāhāgnimiti tadya eṣa ubhayatrācyuta āgneyaḥ puroḍāśo bhavati taṃ samasthāpayan //