Mahabharata 12.214.1

युधिष्ठिर उवाच · yudhiṣṭhira uvāca

द्विजातयो व्रतोपेता यदिदं भुञ्जते हविःअन्नं ब्राह्मणकामाय कथमेतत्पितामह

dvijātayo vratopetā yadidaṃ bhuñjate haviḥannaṃ brāhmaṇakāmāya kathametatpitāmaha

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