Kurmapurana 2.17.18

Kūrmapurāṇa 2.17.18

pāyasaṃ snehapakvaṃ yad gorasaṃ caiva saktavaḥ /
piṇyākaṃ caiva tailaṃ ca śūdrād grāhyaṃ dvijātibhiḥ //