The prophet's companions are the persons who made the sacrifices, served Islam and the messenger of Allah Mohammed peace be upon him. So, they (the prophet's companions) were the ideal and example and were highly sincere and dedicated to their ideology represented by Islam. Saad Ibn Ubadah was one of those great companions. He was an example of the men who were known to be of strong characters, generosity, bravery and dignity. Saad Ibn Ubadah contributed to the establish meaty the Islamic State in Yathrib before the immigration of prophet Mohammed (peace be upon him) as he was the leader of Saa'ida clan which belonged to AlKhazraj tribe in addition to his participations in all the events with the prophet.