Śatapatha Brāhmaṇa ("of a hundred paths") 3.8.3.5

3.8.3.5

atha juhvā pṛṣadājyasyopahatya | adhvaryurupaniṣkramya pṛcati śṛtaṃ haviḥ śamitāriti śṛtamityāha taddevānāmityupāṃśvadhvaryuḥ

Having then taken clotted ghee with the guhû, the Adhvaryu, stepping up (from the altar) to (the Sâmitra), asks, 'Is the sacrificial food cooked, O Sâmitar?' 'Cooked,' he says. 'That is of the gods,' says the Adhvaryu in a low voice.