Kamasutra 3.1.24

3.1.24

kṛtvāpi coccasaṃbandhaṃ paścāj jñātiṣu saṃnamet/
na tv eva hīnasaṃbandhaṃ kuryāt sadbhir vininditam//

Amusement in society, such as completing verses begun by others, marriages, and auspicious ceremonies should be carried on neither with superiors, nor inferiors, but with our equals. That should be known as a high connection when a man, after marrying a girl, has to serve her and her relations afterwards like a servant, and such a connection is censured by the good. On the other hand, that reproachable connection, where a man, together with his relations, lords it over his wife, is called a low connection by the wise. But when both the man and the women afford mutual pleasure to each other, and where the relatives on both sides pay respect to one another, such is called a connection in the proper sense of the word. Therefore a man should contract neither a high connection by which he is obliged to bow down afterwards to his kinsmen, nor a low connection, which is universally reprehended by all.