Śatapatha Brāhmaṇa ("of a hundred paths") 1.2.2.8

1.2.2.8

tam prathayati | uruprathā uru prathasveti prathayatyevainametadur!u te yajñapatiḥ prathatāmiti yajamāno vai yajñapatistadyajamānāyaivaitadāśiṣamāśāste

He spreads it (over the respective potsherds), with the text (Vâg. S. I, 22): 'Spread widely, thou wide-spreading one!' whereby he causes it to spread. He adds: 'May thy Lord of Sacrifice spread widely (prosper)!' Lord of Sacrifice, namely, is the sacrificer: hence it is for the sacrificer that he thereby prays for blessing.