Hiranyakeshigrihyasutra 2.5.14.3

2.5.14.3

tataḥ pūrvedyuranūrādheṣvaparāhṇegnimupasamādhāya dakṣiṇāprāgagnairdarbhaiḥ paristīryaikapavitrāntarhitāni catvāri vrīhiśarāvāṇi nirvapati \ imamapūpaṃ catuḥśarāvaṃ nirvapāmi kleśāvahaṃ pitṝṇāṃ sāṃparāye devena savitrā prasūtaḥ \ devasya tvā savituḥ prasaveśvinorbāhubhyāṃ pūṣṇo hastābhyāṃ pitṛbhyaḥ pitāmahebhyaḥ prapitāmahebhyo vo juṣṭaṃ nirvapāmi \ iti \3\

On the day before that Ashtakâ, under (the Nakshatra) Anûrâdhâs, in the afternoon he puts wood on the fire, strews southward-pointed and eastward-pointed Darbha grass around it, and turns rice out of four shallow cups over which he has laid one purifier, with (the Mantra), 'I turn out, impelled by the god Savitri, this cake prepared from four cups (of rice), which may drive away all suffering from the Fathers in the other world. On the impulse of the god Savitri, with the arms of the two Asvins, with Pûshan's hands I turn thee out, agreeable to the fathers, the grandfathers, the great-grandfathers.'