Mahabharata 3.28.5

आयसं हृदयं नूनं तस्य दुष्कृतकर्मणःयस्त्वां धर्मपरं श्रेष्ठं रूक्षाण्यश्रावयत्तदा

āyasaṃ hṛdayaṃ nūnaṃ tasya duṣkṛtakarmaṇaḥyastvāṃ dharmaparaṃ śreṣṭhaṃ rūkṣāṇyaśrāvayattadā

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