Bhagavad Gita: Verse 1.40
कुलक्षये प्रणश्यन्ति कुलधर्माः सनातनाः ।
धर्मे नष्टे कुलं कृत्स्नमधर्मोऽभिभवत्युत ॥ १-४०॥
kulakṣaye praṇaśyanti kuladharmāḥ sanātanāḥ
dharme naṣṭe kulaṃ kṛtsnamadharmo’bhibhavatyuta
In the destruction of a family, the immemorial religious rites of that family perish; on the destruction of spirituality, impiety overcomes the whole family.
kulakṣaye = in destroying the family; praṇaśyanti = become vanquished; kuladharmāḥ = the family traditions; sanātanāḥ = eternal; dharme = religion; naṣṭe = being destroyed; kulaṃ = family; kṛtsnaṃ = whole; adharmaḥ = irreligion; abhibhavati = transforms; uta = it is said.;