Skandapurana 5.179.3

5.179.3

tenaiva yajatā tatra ko hīṣṭaḥ prabravīhi naḥ ..
ṛtvijaḥ ke sthitāstatra yaistatkarma makhodbhavam ..
tatpratyakṣe kṛtaṃ sarvametannaḥ kautukaṃ param .. 3 ..

Tell us: when he himself was sacrificing there, who indeed was worshipped? / What officiating priests were present there by whom that ritual born of the sacrifice / was all performed visibly? This is our supreme curiosity! / 3