Śatapatha Brāhmaṇa ("of a hundred paths") 1.2.3.7

1.2.3.7

sa imam pṛthivīm praviveśa | taṃ khanantaivānvīṣustamanvavindaṃstāvimau vrīhiyavau tasmādapyetāvetarhi khananta ivaivānuvindanti sa yāvadvīryavaddha vā asyaite sarve paśava ālabdhāḥ syustāvadvīryavaddhāsya havireva bhavati ya evametadvedātro sā sampadyadāhuḥ pāṅktaḥ paśuriti

It entered into this earth. They searched for it, by digging. They found it (in the shape of) those two (substances), the rice and barley: therefore even now they obtain those two by digging; and as much efficacy as all those sacrificed animal victims would have for him, so much efficacy has this oblation (of rice &c.) for him who knows this. And thus there is in this oblation also that completeness which they call 'the fivefold animal sacrifice.'