Śatapatha Brāhmaṇa ("of a hundred paths") 1.1.2.1

1.1.2.1

atha śūrpaṃ cāgnihotrahavaṇīṃ cādatte | karmaṇo vāṃ veṣāya vāmiti yajño vai karma yajñāya hi tasmādāha karmaṇo vāmiti veṣāya vāmiti veveṣṭīva hi yajñam

Thereupon he takes the winnowing basket and the Agnihotra ladle, with the text (Vâg. S. I, 6 b): 'For the work (I take) you, for pervasion (or accomplishment) you two!' For the sacrifice is a work: hence, in saying 'for the work you two,' he says, 'for the sacrifice.' And 'for pervasion you two,' he says, because he, as it were, pervades (goes through, accomplishes) the sacrifice.