Manavashrautasutra 11.2.10

11.2.10

agne rakṣā \ sīsena tantram iti dvābhyām̐ sviṣṭakṛte hutvā samāpte kṛṣṇā gauḥ kṛṣṇāś ca nīlā hemamayaṃ mūlam̐ saptadhānyaṃ cācāryāya dadyād brahmaṇe kṛṣṇo 'naḍvān yathāśaktyā brāhmaṇebhyaḥ suvarṇaṃ dadyāt /

Having offered to Agni Sviṣṭakṛt with the two verses, "O Agni, protect…" and "The web with lead…", when it is concluded, he should give to the teacher a black cow, a black and blue [cloth], the golden root, and the seven grains; to the brahman priest, a black ox; [and] according to his means, he should give gold to the brāhmaṇas.