Mahabharata 8.24.159

नापि सूतकुले जातं कर्णं मन्ये कथंचनदेवपुत्रमहं मन्ये क्षत्रियाणां कुलोद्भवम्

nāpi sūtakule jātaṃ karṇaṃ manye kathaṃcanadevaputramahaṃ manye kṣatriyāṇāṃ kulodbhavam

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