Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 10.8.19

10.8.19

kṣatrasya etac chando yat triṣṭup /

(thinking) ‘The calls of Hail! are the breaths; the omentum is the body; let me not separate the breaths and the body by anything.’ In that the invitatory verses of the victim for Agni and Soma are Anuṣṭubh verses, (it is because) the Anuṣṭubh is the Gāyatrī and the metre of Agni is the Gāyatrī; in that the offering verses are Triṣṭubh verses, it is because the Triṣṭubh is the metre of the lordly power, and Soma is the lordly power. Thus according to the metre he delights the two deities. During the offering of the victim a cake is offered; the cake is the sap of animals; verily thus he makes (the victim) full of sap and fit for sacrifice. Where a cake in connection with the victim is offered, the Sviṣṭakṛt of the cake (offering) is permanent; the Sviṣṭakṛt is Agni (the unmoved); therefore it becomes permanent. Having recited (a verse) of Viçvāmitra, as the invitatory verse for the cake Sviṣṭakṛt, he recites (a verse) of Viçvāmitra as the offering verse; the cake is the continuity of the sacrifice; Viçvāmitra is speech; by speech the sacrifice is continued.