Shatapatha Brahmana 1.3.1.24

1.3.1.24

athājyaliptābhyām pavitrābhyam | prokṣaṇīrutpunāti saviturvaḥ prasava utpu ... bandhuḥtadyadājyaliptābhyām pavitrābhyām | prokṣanīrutpunāti tadapsu payo dadhāti tadidamapsu payo hitamidaṃ hi yadā varṣatyathauṣadhayo jāyanta oṣadhīrjagdhvāpaḥ pītvā tata eṣa rasaḥ sambhavati tasmādu rasasyo caiva sarvatvāya

He then purifies the sprinkling water with the strainers covered with butter, with the text (Vâg. S. I, 31), 'By the impulse of Savitri I purify you (O waters) with a flawless purifier, with the rays of the sun!' The meaning is the same (as before).