Mahabharata 13.123.16

यो भर्ता वासितातुष्टो भर्तुस्तुष्टा च वासितायस्मिन्नेवं कुले सर्वं कल्याणं तत्र वर्तते

yo bhartā vāsitātuṣṭo bhartustuṣṭā ca vāsitāyasminnevaṃ kule sarvaṃ kalyāṇaṃ tatra vartate

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