Śatapatha Brāhmaṇa ("of a hundred paths") 13.4.3.6

13.4.3.6

atha śvo bhūte dvitīye'han evamevaitāsu sāvitrīṣviṣṭiṣu saṃsthitāsveṣaivāvṛdadhvaryaviti havai hotarityevādhvaryuryamo vaivasvato rājetyāha tasya pitaro viśasta ima āsata iti sthavirā upasametā bhavanti tānupadiśati yajūṃṣi vedaḥ so'yamiti yajuṣāmanuvākaṃ vyācakṣāṇa ivānudravedevamevādhvaryuḥ sampreṣyati na prakramānjuhoti

And on the morrow, the second day, after those (three) offerings to Savitri have been performed in the same way, there is that same course of procedure. 'Adhvaryu!' he (the Hotri) says.--'Havai hotar!' replies the Adhvaryu.--'King Yama Vaivasvata,' he (the Hotri) says, 'his people are the Fathers, and they are staying here;'--old men have come thither: it is these he instructs;--'The Yagus-formulas are the Veda: this it is;' thus saying, let him go over a chapter (anuvâka) of the Yagus, as if reciting it. The Adhvaryu calls in the same way (on the masters of lute-players), but does not perform the Prakrama oblations.