The moral and ethical codes of conduct, especially with reference to family life. अर्जुन told the following about कुलधर्मस् to कृष्ण at कुरुक्षेत्र .

In the decline of a family, its time-honoured usages perish; with the perishing of such rites impiety overtakes the entire family.

With the growth of impiety even the noble women become unchaste, and if women become corrupt, mixture of castes ensues.

Hell is verily the lot of the family and family-destroyers through caste admixture; for, their ancestors fall deprived of balls of rice and libations.

The ever-lasting caste virtues and the family merits get ruined because of the chaos in the caste system. We have heard that hell is verily the long-lasting abode of the men whose family religious practices have been broken. [mh-6-25-1 ] Mahābhārata • Bhīṣma parva (and the Gītā) .