The movement of Muhammad Ibn Abdullah Ibn Toumart, given the name "AI-Mahdi", among the Barbar tribes of Maghrib communities is known as the most important Mahdavat movement in the first half of the sixth century of Hijira which resulted in the creation of the second powerful political order of Barbar known as "ALMOHAD" The initial religious movement of Ibn Toumart was based on the "invitation to the grand deed and inhibiting the mean action" concept in order to reveal the sociopolitical corruption that had encircled the Almoravids Shiite., he would assume a meaningful relation between the bad social conditions and the Arrivel of the promised Mahdi. Thus he would pave the way for picturing that historical period and His acceptance by the majority of the people. Therefore, Ibn Toumarts claim of Mahdaviat is the corollary of "invitation to the grand deed and inhibiting the mean action" and the principle of Jaehad, more in a sapse of fostering the Barbar tribes prejudice in order to establish a politico-religious order, in the region in the short run and beyond the region in the long run, through general social unity in the Islamic world under his leadership.