Mahabharata 13.42.22

एतच्छ्रुत्वा तु विपुलो विषण्णवदनोऽभवत्एवं तीव्रतपाश्चाहं कष्टश्चायं परिग्रहः

etacchrutvā tu vipulo viṣaṇṇavadano'bhavatevaṃ tīvratapāścāhaṃ kaṣṭaścāyaṃ parigrahaḥ

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