Śatapatha Brāhmaṇa ("of a hundred paths") 11.7.1.2

11.7.1.2

sa yatpaśubandhena yajate agnīnevaitatpunarṇavānkurute'gnīnām punarṇavatāmanu yajamānamanu gṛhāśca paśavaścāyuṣyo ha vā asyaiṣa ātmaniṣkrayaṇo bhavati māṃsīyanti ha vai juhvato yajamānasyāgnayaste yajamānameva dhyāyanti yajamānaṃ saṃkalpayanti pacanti vā anyeṣvagniṣu vṛthāmāṃsamathaiteṣāṃ nāto'nyā māṃsāśā vidyate yasyo caite bhavanti

And when he performs the animal sacrifice, he renews his fires, and so, along with the renewal of his fires, does the Sacrificer (renew himself), and along with the Sacrificer his house and cattle. And beneficial to life, indeed, is that redemption of his own self; for whilst he is offering the Sacrificer's fires long for flesh; they set their minds on the Sacrificer and harbour designs on him. In other fires people do indeed cook any kind of meat, but these (sacrificial fires) have no desire for any other flesh but this (sacrificial animal), and for him to whom they belong.