Bhagavad Gita Chapter 1 Verse 40
भगवद् गीता अध्याय 1 श्लोक 40

कुलक्षये प्रणश्यन्ति कुलधर्माः सनातनाः।
धर्मे नष्टे कुलं कृत्स्नमधर्मोऽभिभवत्युत।।1.40।।



हिंदी अनुवाद - स्वामी रामसुख दास जी ( भगवद् गीता 1.40)
।।1.40।।कुलका क्षय होनेपर सदासे चलते आये कुलधर्म नष्ट हो जाते हैं और धर्मका नाश होनेपर (बचे हुए) सम्पूर्ण कुलको अधर्म दबा लेता है।


Rudra Vaishnava Sampradaya - Commentary

The sinfulness alluded to in the previous verse leads to the degradation of
the females in the family is being described here.


Brahma Vaishnava Sampradaya - Commentary

Madhvacarya has no commentary so we present Baladeva Vidyabhusanas.

When adharma or unrighteousness controls  the  decorum  of  a  dynasty,  the
females  in  the  family  unavoidably  become  unchaste  and   their   wombs
subsequently become contaminated. Because their husbands have  violated  the
injunctions of the scriptures and engaged themselves  in  committing  sinful
activities by the destruction of the dynasty,  the  females  of  the  family
without proper guidance and adequate protection  will  become  depraved  and
wanton  disregarding  the  etiquette  of  morality  and  decorum  and   thus
degenerating the females of the family will soon become degraded.


Shri Vaishnava Sampradaya - Commentary
There is no commentary for this verse.


Kumara Vaishnava Sampradaya - Commentary
Deliberating further Arjuna determines  that  when  unrighteousness  becomes
predominant in the family due to the loss of  the  father  who  insures  the
continuation of  the  family  customs  and  the  propagation  of  the  Vedic
tradition, the females of  the  family  become  easily  accessible  and  are
placed  in  conditions  of  compromise.  From  this  polluted  and  degraded
position arises undesirable progeny. The purpose of Arjuna  addressing  Lord
Krishna by the vocative Varsneya is to remind Him that He took birth in  the
exalted royal Vrsni dynasty and as such should be fully aware of  all  these
things.