Mahabharata 5.4.4

न तु वाच्यो मृदु वचो धार्तराष्ट्रः कथंचनन हि मार्दवसाध्योऽसौ पापबुद्धिर्मतो मम

na tu vācyo mṛdu vaco dhārtarāṣṭraḥ kathaṃcanana hi mārdavasādhyo'sau pāpabuddhirmato mama

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