Manusmriti

siva.sh/manusmriti/9/260

एवमादीन् विजानीयात् प्रकाशांल्लोककण्टकान् । निगूढचारिणश्चान्याननार्यानार्यलिङ्गिनः ॥ २६० ॥

sanskrit

These and the like who show themselves openly, as well as others who walk in disguise (such as) non Aryans who wear the marks of Aryans, he should know to be thorns (in the side of his people).

english translation

evamAdIn vijAnIyAt prakAzAMllokakaNTakAn | nigUDhacAriNazcAnyAnanAryAnAryaliGginaH || 260 ||

hk transliteration by Sanscript