Secular scholars pinpoint the actual beginnings of the classical Islamic identity to the ninth century, thus the formative stage of Islam, was not within the lifetime of Muhammad but evolved over a period of two to three centuries <ref>R. Stephen Humphreys Islamic History, a framework for Enquiry, Princeton, 1991 pg.83-89</ref>. | Secular scholars pinpoint the actual beginnings of the classical Islamic identity to the ninth century, thus the formative stage of Islam, was not within the lifetime of Muhammad but evolved over a period of two to three centuries <ref>R. Stephen Humphreys Islamic History, a framework for Enquiry, Princeton, 1991 pg.83-89</ref>. |