Mahabharata 13.148.16

अमृतं ब्राह्मणा गाव इत्येतत्त्रयमेकतःतस्माद्गोब्राह्मणं नित्यमर्चयेत यथाविधि

amṛtaṃ brāhmaṇā gāva ityetattrayamekataḥtasmādgobrāhmaṇaṃ nityamarcayeta yathāvidhi

Our plain-language meaning of this verse is waiting for scholar review.