Mahabharata 13.33.23

परिवादो द्विजातीनां न श्रोतव्यः कथंचनआसीताधोमुखस्तूष्णीं समुत्थाय व्रजेत वा

parivādo dvijātīnāṃ na śrotavyaḥ kathaṃcanaāsītādhomukhastūṣṇīṃ samutthāya vrajeta vā

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