Shatapatha Brahmana 11.1.4.2

11.1.4.2

tānaparāhṇe parṇaśākhayāpākaroti tadyathaivādaḥ prajñātamāmāvāsyaṃ havirevameva tadyadyu vratacaryāṃ vā nodāśaṃseta gṛhītaṃ vā havirabhyudiyāditaratho tarhi kuryādetāneva taṇḍulāntsuphalīkṛtānkṛtvā sa ye'ṇīyāṃsastānagnaye dātre'ṣṭākapālam puroḍāśaṃ śrapayati

In the afternoon he drives them away with the parna-branch; and as there that approved oblation of the New-moon offering (is prepared) so here. But if he should not care to undergo (again) the fasting-observance, or if (the moon) were to rise over (the material for) the oblation already taken out, then let him do otherwise: having properly cleansed the rice-grains of the husks, he cooks the smaller ones as a cake on eight potsherds for Agni Dâtri (the Giver).