Several man amongst Jews and Christians love him, and such philosophers who came to know of his teachings bow down before his incomparable vast knowledge. Roman Kings would have his pictures in their palaces and great warriors would engrave his name on their swords.

Islam, as history records, was not established without a struggle and Hazrat Mowla Ali (a.s.) figured prominently in nearly all the early battles. At the Battle of Uhud it was through the instrumentality of Mowla Ali (a.s.) that Islam was saved from what might have turned out to be its early end. On more than one occasion Mowla Ali's bravery and skill saved the Muslims from defeat. The manner in which he displayed his courage and swordsmanship in the battles earned for him such titles as "the Sword of Allah" and "the Lion of Allah".

Gibbon writing in "The History of the Decline and Fall of the Roman Empire" says about Hazrat Ali (a.s.): "From the first hour of mission to the last rites of his funeral, the Prophet was never forsaken by this generous friend, whom he delighted to name his brother, his vicegerent and the faithful Aaron of second Moses."

In one of his Khutba, Mowla Ali (a.s.) spoke of the part he played in the cause of Islam and his
close relationship with the Prophet.  He said: "These companions of the Holy Prophet,    know and can testify that I never, even for a second, violated the orders of God and the Holy Prophet. On all such occasions when even the bravest of men felt nervous and wanted to get out of the engagement. I risked my life to save the life of the Holy Prophet and to defend the cause of Islam. When the Holy Prophet died, he breathed his last with his head resting on my chest    During his lifetime I was dearest and nearest to him and at his death I was the last to part with him. Who can claim to have closer connection with him than I and who can assert to have greater right to be his heir and successor?"