Śatapatha Brāhmaṇa ("of a hundred paths") 4.5.2.9

4.5.2.9

atha pracaraṇīti srugbhavati | tasyām pratiprasthātā medhāyopastṛṇīte dviravadyati sakṛdabhighārayati pratyanaktyavadāne athānuvāca āhāśrāvyāha preṣyeti vaṣaṭkṛte 'dhvaryurjuhotyadhvaryoranu homaṃ juhoti pratiprasthātā

Now there is an offering-spoon called prakaranî therein the Pratiprasthâtri makes an underlayer of ghee for the fat juice, takes two portions (from the juice), bastes them once (with ghee), and replenishes (the juice whence) both portions (have been taken). He (the Adhvaryu) then addresses (the Hotri) for. the recitation (of the invitatory prayer). Having called for the Sraushat, he says (to the Maitrâvaruna), 'Prompt (the Hotri to recite the offering prayer)!' As the Vashat is uttered, the Adhvaryu offers (the flesh portions). After the Adhvaryu's oblation the Pratiprasthâtri offers (the fat juice)--