I presume you're talking about the Mufti of Jerusalem, Haj Amin al-Husseini. Al-Husseini was a creation of British intelligence in Palestine. He had failed to finish his studies at the Al Azhar Islamic University, but was still appointed to one of the most important religious positions in all of Islam, i.e. the Mufti of Jerusalem, by the British governor of Jerusalem, Sir Ronald Storrs, in 1921. These were the very same British imperialists who did the dirty Balfour deal with the Zionists, which has led to all the violence in the Middle East. As for the Al Saud gangster family and the gangsters in Qatar, they have both supported ISIS with hundreds of millions of dollars, including shipping sophisticated US, British and possibly Israeli weapons to ISIS. Though it's certain that Israel shipped Israeli weapons itself to ISIS. There was hardly an ISIS dump found that didn't contain Israeli weapons.