Śatapatha Brāhmaṇa ("of a hundred paths") 5.3.3.2

5.3.3.2

savitre satyaprasavāya | dvādaśakapālaṃ vāṣṭākapālaṃ vā puroḍāśaṃ nirvapati plāśukānāṃ vrīhīṇāṃ savitā vā devānām prasavitā savitṛprasūtaḥ sūyā ityatha yatplāśukānāṃ vrīhīṇāṃ kṣipre mā prasuvāniti

For Savitri Satyaprasava (of true impulse) he prepares a cake from fast-grown (plâsuka) rice, on either twelve, or eight, potsherds; for Savitri is the impeller (prasavitri) of the gods: 'May I be quickened, impelled by Savitri!' thus (he thinks). And as to (its being) of fast-grown rice: 'May they quickly impel me!' he thinks.