Mahabharata 7.118.12

कथं हि राजवंश्यस्त्वं कौरवेयो विशेषतःक्षत्रधर्मादपक्रान्तः सुवृत्तश्चरितव्रतः

kathaṃ hi rājavaṃśyastvaṃ kauraveyo viśeṣataḥkṣatradharmādapakrāntaḥ suvṛttaścaritavrataḥ

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