Mahabharata 3.243.20

एतच्छ्रुत्वा धर्मसुतः समुद्विग्नो नराधिपअभेद्यकवचं मत्वा कर्णमद्भुतविक्रमम्अनुस्मरंश्च संक्लेशान्न शान्तिमुपयाति सः

etacchrutvā dharmasutaḥ samudvigno narādhipaabhedyakavacaṃ matvā karṇamadbhutavikramamanusmaraṃśca saṃkleśānna śāntimupayāti saḥ

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