Mahabharata 14.18.13

तत्र धर्मं प्रवक्ष्यामि सुखी भवति येन वैआवर्तमानो जातीषु तथान्योन्यासु सत्तम

tatra dharmaṃ pravakṣyāmi sukhī bhavati yena vaiāvartamāno jātīṣu tathānyonyāsu sattama

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