Shatapatha Brahmana 11.2.6.14

11.2.6.14

atha ha sa devayājī yo veda devānevāhamidaṃ yaje devāntsaparyāmīti sa yathā śreyase pāpīyānbaliṃ haredvaiśyo vā rājñe baliṃ haredevaṃ sa sa ha na tāvantaṃ lokaṃ jayati yāvāntamitaraḥ

And a god-offerer, doubtless, is he who knows, 'I am now offering sacrifice to the gods, I am serving the gods,'--such a one is like an inferior who brings tribute to his superior, or like a man of the people who brings tribute to the king: verily, he does not win such a place (in heaven) as the other.