ABSTRACT
The conquest was not the result of a series of fortuitous accidents but a warlike machine, which preceded and determined the Arab migration. A relatively assiduous and attentive reading of the Arabic sources gives, in fact, a full illustration of the phenomenon of the conquest. Returning to the more definitive responses, as a reminder and making no judgment, one could retain certain key-words: military conquest, booty, economic gain, religious revolution. The troops of the conquest were not disorganized hordes, descending on the Syrian countryside or the ancient cities of the Euphrates. The policy of the Prophet Muhammad was simultaneously to preserve, to a certain extent, the power of the aristocracies, and to create a new conception of social linkage. Muhammad found in the haram that which could found a new community. He adopted the religious values of his milieu, while transforming them, while changing their sense.
