Kāpavya-carita (कापव्यचरित) — Reforming Dasyus through Regulated Rāja-Dharma
न वाच्य: परिवादो<यं न श्रोतव्य:ः कथड्चन । कर्णावथ पिधातव्यौ प्रस्थेयं चान्यतो भवेत्
na vācyaḥ parivādo ’yaṃ na śrotavyaḥ kathaṃcana | karṇāv atha pidhātavyau prasthēyaṃ cānyato bhavet ||
毗湿摩说道:“此类诽谤之言,既不当出口,也不当以任何方式聆听。若有人正在毁谤他人,当掩耳不闻——否则便起身离席,另往他处。”
भीष्म उवाच
One should practice restraint in speech and hearing: do not engage in slander, do not entertain it by listening, and if it arises, actively avoid it by closing the ears or leaving.
In the Śānti Parva’s instruction on dharma and proper conduct, Bhīṣma advises the listener on ethical behavior, specifically how to respond when others indulge in backbiting.