Śatapatha Brāhmaṇa ("of a hundred paths") 3.4.4.11

3.4.4.11

sa āhātikrāmannagnaye 'nubrūhīti | āśrāvyāhāgniṃ yajeti vaṣaṭkṛte juhoti

While passing over (to the south side of the fire and altar) he says (to the Hotri), 'Recite the invitatory prayer to Agni!' and having called for the Sraushat, he says, 'Pronounce the offering prayer to Agni!' and pours out the oblation when the Vashat is uttered.