Mahabharata 13.93.1

युधिष्ठिर उवाच · yudhiṣṭhira uvāca

द्विजातयो व्रतोपेता हविस्ते यदि भुञ्जतेअन्नं ब्राह्मणकामाय कथमेतत्पितामह

dvijātayo vratopetā haviste yadi bhuñjateannaṃ brāhmaṇakāmāya kathametatpitāmaha

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