Mahabharata 13.131.26
एभिस्तु कर्मभिर्देवि शुभैराचरितैस्तथाशूद्रो ब्राह्मणतां गच्छेद्वैश्यः क्षत्रियतां व्रजेत्
ebhistu karmabhirdevi śubhairācaritaistathāśūdro brāhmaṇatāṃ gacchedvaiśyaḥ kṣatriyatāṃ vrajet
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book