Manusmriti
हीनजातिस्त्रियं मोहादुद्वहन्तो द्विजातयः । कुलान्येव नयन्त्याशु ससन्तानानि शूद्रताम् ॥ १५ ॥
Twice-born men who, in their folly, wed wives of the low (Sudra) caste, soon degrade their families and their children to the state of Sudras.
english translation
hInajAtistriyaM mohAdudvahanto dvijAtayaH । kulAnyeva nayantyAzu sasantAnAni zUdratAm ॥ 15 ॥
hk transliteration by Sanscript