Shatapatha Brahmana 4.5.9.13

4.5.9.13

kiṃ nu tatrādhvaryo | yadudgātā ca hotā ca candāṃsi vyūhata etadvā adharyurvyūhati grahānyadaindravāyavāgrānprātaḥsavane gṛhṇāti śukrāgrānmādhyandine savana āgrayaṇāgrāṃstṛtīyasavane

What, then, is the Adhvaryu to do in that case, when both the Udgâtri and Hotri transpose (change) the metres? In that, at the morning pressing, he draws first the Aindravâyava cup; and at the midday pressing the Sukra cup; and at the evening pressing the Âgrayana cup,--thereby forsooth the Adhvaryu transposes (the cups).