One should never utter the dispraise or calumny of the Brahmanas. Where the dispraise of Brahmanas is uttered, one should sit with face hanging down or leave that place.
परिवादो द्विजातीनां न श्रोतव्यः कथंचन। आसीताधोमुखस्तूष्णीं समुत्थाय व्रजेच्च वा॥