दोषैरेतैः कुलघ्नानां वर्णसङ्करकारकैः।
उत्साद्यन्ते जातिधर्माः कुलधर्माश्च शाश्वताः।।1.43।।
।।1.43।।इन वर्णसंकर पैदा करनेवाले दोषोंसे कुलघातियोंके सदासे चलते आये कुलधर्म और जातिधर्म नष्ट हो जाते हैं।
Persons whose family traditions have been destroyed means also those whose caste and heritage has also been lost. We have heard from the authoritative sources of the Vedas scriptures that those addicted to vice who perform no expiation nor feel any repentance, go to terrible hells full of misery.
Madhvacarya has no commentary so we present Baladeva Vidyabhusanas. Here by the word kula-dharma getting spoiled also means that jati-dharmah meaning the duties of each caste and asrama dharma meaning the relationships between the castes are indicated as well. Anususruma means we have heard in the line of parampara disciplic succession that persons who are addicted to sinful activities; yet who do not make atonement or repent are damned to excruciatingly painful and terrifying hells.
There is no commentary for this verse.
Arjuna is supporting his argument by affirming that he has heard from respectable sources in disciplic succession, that those who are responsible for destroying righteousness reside permanently in hellish existence. Therefore this decision to fight is not the wisest of choices.