Mahabharata 1.103.6

कुलीना रूपवत्यश्च नाथवत्यश्च सर्वशःउचिताश्चैव संबन्धे तेऽस्माकं क्षत्रियर्षभाः

kulīnā rūpavatyaśca nāthavatyaśca sarvaśaḥucitāścaiva saṃbandhe te'smākaṃ kṣatriyarṣabhāḥ

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