Jaiminīya Upaniṣad Brāhmaṇa 3.17.4

3.17.4

tad āhur yad ahauṣīn me grahān me 'grahīd ity adhvaryave dakṣiṇā nayanty aśaṁsīn me vaṣaḍ akar ma iti hotra udagāsīn ma ity udgātre 'tha kiṃ cakruṣe brahmaṇe tūṣṇīm āsīnāya samāvatīr evetarair ṛtvigbhir dakṣiṇā nayantīti /

Regarding this they say: 'They lead the sacrificial gift to the adhvaryu, [thinking] "He offered for me, he took the cups for me"; to the hotṛ, [thinking] "He recited for me, he uttered the vaṣaṭ-call for me"; to the udgātṛ, [thinking] "He chanted for me." Now, for what action do they lead to the brahman priest, who sits silently, sacrificial gifts equal to those of the other priests?'