Crossword-Solution: IMIDS 5 letters, 1 clue 🏆 scrabble score: 8

But in the beginning of the tenth century there arose in Africa a great Shí‘ite power, that of the Fáṭimids, who took for themselves the title and prerogatives of the Caliphate, which they asserted to be theirs by right Divine.

Here we can only refer to the ingenious and fatally insidious methods which he devised for gaining proselytes on a gigantic scale, and with such amazing success that from this time until the Mongol invasion--a period of almost four centuries--the Ismá‘ílites (Fáṭimids, Carmathians, and Assassins) either ruled or ravaged a great part of the Muḥammadan Empire.