Abstract
The research aims at the study of the Al-Salasil company which was sent by prophet Muhammad (PBUH) in (8H/ 629 A.C) to the outskirts of Al-Sham led by Amr Bin Al-Aas due to the historical, political, military and jurisprudence lessons. This company has succeeded to subject the tribes surrounding Al-Sham and persuade them that the Muslims are a power able to spread Islam in Arab Peninsula.