“There is no doubt that he (Bagdadhi) [sic] is the legitimate caliph and it is incumbent upon you to give your be’ah (allegiance)… So take up arms, take up arms, O soldiers of the Islamic State! And fight, fight!”“Former Revolution Muslim Imam Encourages Support for ISIS,” Anti-Defamation League, September 10, 2014, http://blog.adl.org/anti-semitism/abdullah-al-faisal-isis.