Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Arjuna’s Vishada Yoga Chapter 1, Verse 1.39.
Sanskrit
कुलक्षये प्रणश्यन्ति कुलधर्माः सनातनाः । धर्मे नष्टे कुलं कृत्स्नमधर्मोऽभिभवत्युत ॥ १.३९ ॥
Hindi
कुल के नाश से सनातन कुल-धर्म नष्ट हो जाते हैं, धर्म के नाश हो जाने पर सम्पूर्ण कुल में पाप भी बहुत फैल जाता है ।
English
Arjuna explained: When one begins to destroy his own family, then his ancient, respected traditions, customs, moral values, principles, are destroyed as well. By the destruction of these, the whole family becomes evil and huge sins are committed.