1:40
कुलक्षये प्रणश्यन्ति कुलधर्माः सनातनाः ।
धर्मे नष्टे कुलं कृत्स्नमधर्मोऽभिभवत्युत ॥१-४०॥
kulakShaye praNashyanti kuladharmaaH sanaatanaaH ।
dharme naShTe kulaM kRRitsnamadharmo'bhibhawatyuta ॥१-४०॥
Source: Automatic ITRANS Transliteration
In the destruction of the clan, eternal family values perish.
Also, following the destruction of values, corruption overcomes the family entirely.
Source: Milind S. Pandit
With the destruction of the family, the eternal family traditions are destroyed, and immorality prevails due to the destruction of family traditions.
When irreligion is prominent in the family, O Krsna, the women of the family become corrupt, and from the degradation of womanhood, O descendant of Vrsni, comes unwanted progeny.
Source: Bhagavad Gita As It Is