Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 4.4.22

4.4.22

tat tṛtīya savanam āpnoti / (Vikṛti iṣṭayah)

Agni and Soma which is offered on the fast day of the Soma (sacrifice). In that he sacrifices in the morning with the new moon offerings, and the pressing day is Indra's, thus he obtains the pressing day. In that at the new moon offering on the fast day he offers a cake on twelve potsherds to Indra and Agni and the third pressing belongs as regards its Sāman to Indra and Agni, thus he obtains the third pressing. In that there is a milk mess for Mitra and Varuṇa, and the offering (of a cow) is for Mitra and Varuṇa, thus he obtains the offering of a cow. Thus Soma is present, having penetrated the Haviryajñas; therefore though unconsecrated he performs the vows of the consecrated.