Śatapatha Brāhmaṇa ("of a hundred paths") 1.8.3.25

1.8.3.25

sa sampragṛhṇāti | saṃsravabhāgā stheṣā bṛhanta iti saṃsravo hyeva khalu pariśiṣṭo bhavati prastareṣṭhāḥ paridheyāśca devā iti prastaraśca hi paridhayaścānuprahṛtā bhavantīmāṃ vācamabhi viśve gṛṇanta ityetadu vaiśvadevaṃ karotyāsadyāsminbarhiṣi mādayadhvaṃ svāhā vāḍiti tadyathā vaṣṭkṛtaṃ hutamevamasyaitadbhavati

He seizes them, with the text (Vâg. S. II, 18), 'The residue (of the butter) ye have for your share, ye, mighty by (this) food!' the residue, of course, is that which remains;--'O ye gods, staying on the prastara, and representing the enclosing-sticks;' for both the prastara and the enclosing-sticks have been thrown into the fire;--'All of you, applauding this speech,' thereby he makes it the vaisvadeva (belonging to the Visve Devâh);--'Be seated on this couch of grass (barhis) and enjoy yourselves! Svâhâ! Vât!' as one offers what has been consecrated by 'vashat,' this (residue) thereby becomes such for him (the sacrificer).