Shatapatha Brahmana 11.5.5.11

11.5.5.11

parihite prātaranuvāke yathāyatanamevopāṃśvantaryāmau hutvā droṇakalaśe pavitram prapīḍyaṃ nidadhāti tiro'hnayaiścaritvā pratyañcaḥ pratiparetya tirohnayāneva bhakṣayādhvā athānupūrvaṃ yajñapucaṃ saṃsthāpya ya ūrdhvā antaryāmādgrahāstāngṛhītvā vipruṣāṃ homaṃ hutvā saṃtaniṃ ca bahiṣpavamānena stutvāhareva pratipadyādhvā iti

'When the Prâtar-anuvâka has been completed, he (the Pratiprasthâtri), having offered, at their proper time, the Upâmsu and Antaryâma cups, presses out the straining-cloth and puts it in the Dronakalasa. And when ye have performed the (offering of the cups of) fermented Soma, and returned (to the Sadas), ye should drink the fermented Soma (remaining in those cups). Having then, in the proper form, completed the "tail of the sacrifice," and taken up the cups of Soma (drawn) subsequent to the Antaryâma, and offered the oblation of drops, as well as the Santani-oblation, ye should perform the Bahishpavamâna chant, and enter upon the day (-performance).'