Śatapatha Brāhmaṇa ("of a hundred paths") 3.2.4.14

3.2.4.14

so 'poddharati | śukramasi candramasyamṛtamasi vaiśvadevamasīti kṛtsnena payasā hutvā yadevaitattadāha śukramasīti śukraṃ hyetaccandramasīti candraṃ hyetadamṛtamasītyamṛtaṃ hyetadvaiśvadevamasīti vaiśvadevaṃ hyetatpramucya tṛṇam barhiṣyapisṛjati sūtreṇa hiraṇyam prabadhnīte

He takes it out, with the text, Thou art pure, thou art shining, thou art immortal, thou art sacred to all the gods.' When, having offered the whole milk, he now says, 'Thou art pure...,' it is indeed pure, and shining, and immortal, and sacred to all the gods. Having loosened the grass-blade, he throws it on the barhis, and ties a string round the gold.