Bhagavad Gita Chapter 1 Verse 40

Gita 1.40

Kulakshye, pranashyanti, kuldharmaH, sanatanaH,
Dharme, nashte, kulam’, krtsnnam’, adharmH, abhibhavti, ut ||40||

Translation: (Kulakshye) with the destruction of family (sanaatanaH) ancient /immemorial (kuldharmaH) laws of family (pranashyanti) are destroyed (dharme) of laws (nashte) on being destroyed (krtsnnam’) entire (kulam’) in the family (adharmH) sin (ut) also (abhibhavti) spreads a lot. (40)

Translation: With the destruction of family the ancient laws of the familiy are destroyed and with the destruction of the laws, sin also spreads a lot in the entire family.