This is worth remembering when folks start considering a separate Shariah law system for Muslims in western countries.

(CNN) — In a new publication, ISIS justifies its kidnapping of women as sex slaves citing Islamic theology, an interpretation that is rejected by the Muslim world at large as a perversion of Islam.

“One should remember that enslaving the families of the kuffar — the infidels — and taking their women as concubines is a firmly established aspect of the Shariah, or Islamic law,” the group says in an online magazine published Sunday.