Manusmriti

siva.sh/manusmriti/7/24

दुष्येयुः सर्ववर्णाश्च भिद्येरन् सर्वसेतवः । सर्वलोकप्रकोपश्च भवेद् दण्डस्य विभ्रमात् ॥ २४ ॥

sanskrit

All castes (varna) would be corrupted (by intermixture), all barriers would be broken through, and all men would rage (against each other) in consequence of mistakes with respect to punishment.

english translation

duSyeyuH sarvavarNAzca bhidyeran sarvasetavaH | sarvalokaprakopazca bhaved daNDasya vibhramAt || 24 ||

hk transliteration by Sanscript