The interpretation of Islam promoted by this funding was the strict, conservative Saudi-based Wahhabism or Salafism . In its harshest form it preached that Muslims should not only "always oppose" infidels "in every way," but "hate them for their religion ... for Allah's sake," that democracy "is responsible for all the horrible wars of the 20th century," that Shia and other non-Wahhabi Muslims were infidels , etc.  While this effort has by no means converted all, or even most Muslims to the Wahhabist interpretation of Islam, it has done much to overwhelm more moderate local interpretations, and has set the Saudi-interpretation of Islam as the "gold standard" of religion in minds of some or many Muslims. 
But while Al-Farabi , Ibn Sina (Avicenna), and other Persian and Muslim philosophers hurried, so to speak, over subjects that trenched on religious dogmas, Ibn Rushd delighted in dwelling upon them with full particularity and stress. Thus he says, "Not only is matter eternal, but form is potentially inherent in matter; otherwise, it were a creation ex nihilo " (Munk, "Mélanges", p. 444). According to this theory, therefore, the existence of this world is not only a possibility, as Ibn Sina declared—in order to make concessions to the orthodox— but also a necessity.