Śatapatha Brāhmaṇa ("of a hundred paths") 3.9.3.23

3.9.3.23

so 'po 'bhijuhoti | etāṃ ha vā āhutiṃ hṛtāmeṣa yajñasya rasa upasameti tām pratyuttiṣṭhati tamevaitadāviṣkṛtya gṛhṇāti

He offers (the ghee) upon the water; for that sap of the sacrifice, indeed, draws near to that oblation, when offered; it rises (to the surface) to meet it; and having thus brought it to light, he seizes it.