Mahabharata 13.119.9
श्वाविद्गोधावराहाणां तथैव मृगपक्षिणाम्श्वपाकवैश्यशूद्राणां क्षत्रियाणां च योनिषु
śvāvidgodhāvarāhāṇāṃ tathaiva mṛgapakṣiṇāmśvapākavaiśyaśūdrāṇāṃ kṣatriyāṇāṃ ca yoniṣu
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book