Bhagavad Gita 1.38

1.38. Though they, with intelligence overpowered by greed, see no evil in the destruction of families, and no sin in hostility to friends,

O Madhava, why should we, who can see the crime in destroying a family, engage in these acts of sin? With the destruction of the dynasty, the eternal family tradition is vanquished, and thus the rest of the family becomes involved in irreligion.