We can say at the beginning of Islamic Arabic participation in moving Saracens. These tribes settled down in the unseal cities, then it became to each tribes has especial plane for it. Mosul was one of these tribes. Was al-Azd, This research is just slight attempt to show the role of earlier Islamic period .Then to show the most important characters which appear in the modern science field which was taken a big attention from the student in different Islamic countries. Mosul was one of them. In this research was divided in to several important notes:Brief scrap about al-Azd tribe.Al-azd characters that was mentioned in the historical sources and biography books.The role of these characters in the next ages.