Śatapatha Brāhmaṇa ("of a hundred paths") 5.2.2.4

5.2.2.4

sa yanna sambharati | tasyodbruvīta tasya nāśnīyādyāvajjīvaṃ tathā nāntameti tathā jyogjīvati sa etasya sarvasyānnādyasya sambhṛtasya sruveṇopaghātaṃ vājaprasavīyāni juhoti tadyābhya evaitaddevatābhyo juhoti tā asmai prasuvanti tābhiḥ prasūta ujjayati tasmādvājaprasavīyāni juhoti

And whatever food he does trot bring to him, let him (the Sacrificer) forswear that, and not eat of it as long as he lives: thus he does not go to the end, thus he lives long. Of all that food brought together he offers the (seven) Vâga-prasavanîya oblations, cutting out (pieces) with the dipping-spoon. Thus to whatever deities he is now offering, they give an impulse to him, and impelled by them he wins: therefore he offers the Vâgaprasavanîya oblations.