Mahabharata 5.130.13

दण्डनीतिः स्वधर्मेण चातुर्वर्ण्यं नियच्छतिप्रयुक्ता स्वामिना सम्यगधर्मेभ्यश्च यच्छति

daṇḍanītiḥ svadharmeṇa cāturvarṇyaṃ niyacchatiprayuktā svāminā samyagadharmebhyaśca yacchati

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