الخلاصة:
The scholars of Islam were the first to study the religions in a critical analytical study. This pioneering process emerged in the field of the Islamic statement, especially among the historians and the Muslim theologians. The Qur'an was the basis or methodological model followed by the mechanisms of reasoning which helped them to defend the right and support the religion of monotheism, in spite of the differences between theologian’s references , they had two types of criticism: external criticism, and internal criticism, in the first examines the form and the conditions of the document and not his content, it wonders about how the holy books of Judaism and christianism were writedand the state and the sectarianism of his author , and the temporal and spatial framework in which it was written, while the researcher in the second type studies the historical source in terms of content and not form, the researcher in This field wonders about the possibility of achieving the historical truth, whose criterion has always been conformity.