kula-kṣaye praṇaśyanti
kula-dharmāḥ sanātanāḥ
dharme naṣṭe kulaḿ kṛtsnam
adharmo ‘bhibhavaty uta
Translation of Bhagavad Gita 1.39
With the destruction of dynasty, the eternal family tradition is vanquished, and thus the rest of the family becomes involved in irreligion.