Śatapatha Brāhmaṇa ("of a hundred paths") 3.1.3.5

3.1.3.5

sa hovāca | rādhnavānme sa prajāyāṃ ya etamādityebhyaścaruṃ nirvapāditi rādhnoti haiva ya etamādityebhyaścaruṃ nirvapatyayaṃ tvevāgnāvaiṣṇavaḥ prajñātaḥ

He spake, 'Among my offspring he shall be successful who shall offer that rice-pap to the Âdityas.' Accordingly he alone succeeds who offers that rice-pap to the Âdityas. Only that (cake) to Agni and Vishnu is, however, generally approved.