Shatapatha Brahmana 5.3.1.9

5.3.1.9

atha śvo bhūte | bhāgadughasya gṛhānparetya pauṣṇaṃ caruṃ nirvapati pūṣā vai devānām bhāgadugha eṣa vā etasya bhāgadugho bhavati tasmātpauṣṇo bhavatyetadvā asyaikaṃ ratnaṃ yadbhāgadughastasmā evaitena sūyate taṃ svamanapakramiṇaṃ kurute tasya śyāmo gaurdakṣiṇā tasyāsāveva bandhuryo 'sau triṣaṃyukteṣu

And on the following day he goes to the house of the Carver (bhâgadugha), and prepares a pap for Pûshan, for Pûshan is carver to the gods; and that (officer) is carver to that (king): therefore it is for Pûshan. And he, the carver, assuredly is one of his (the king's) jewels: it is for him that he is thereby consecrated, and him he makes his own faithful follower. The sacrificial fee for this (jewel) is a dark-grey bullock: the significance of such a one being the same as at the Trishamyukta.