Verse
दोषैरेतैः कुलघ्नानां वर्णसंकरकारकैः ।उत्साद्यन्ते जातिधर्माः कुलधर्माश्च शाश्वताः ॥
doṣairetaiḥ kulaghnānāṃ varṇasaṃkarakārakaiḥutsādyante jātidharmāḥ kuladharmāśca śāśvatāḥ
By these misdeeds of the ruiners of the family leading to the confusion of the orders, the eternal laws of the race and moral law of the family are destroyed.
Gītā 1·42