He went to war against his enemies and conquered several Arabian, Jewish, and Christian tribes before he entered Mecca in triumph in 630 A.D. After his triumphant entrance, he destroyed the idols of Kaaba and became the master of Arabia, and was the first to unite all the tribes of Arabia under one emblem and one religion. It was in 632 A.D. that he made his last pilgrimage to Mecca. He entered the city at the head of forty thousand followers, and soon after he returned, died of a violent fever. He was sixty-three and it was the eleventh year of the Hejira, or 633 A.D. by the Christian calendar.
According to tradition, Mohammed was simple in his habits, but most careful in personal appearance. He loved perfumes and hated strong drinks. Because of a highly nervous temperament, he shrank away from bodily pain. He did have great powers of imagination but he remained taciturn. He was affectionate, generous, pious, and austere in the practice of his religion. Brave zealous, and above all reproach was he in his personal and family conduct. Palgrave, however, wisely remarked that "the ideals of Arab virtue were first conceived and then attributed to him."" Nevertheless, with every allowance for exaggeration, Mohammed is shown by his life and deeds to have been a man of dauntless courage, great generalship, strong patriotism, great mercy, and quick to forgive. Yet through this all he was ruthless in his dealings with Jews when once he ceased to hope for their submission. He approved assassination when it could help him, and however barbarous or treacherous the means, the end justified the way in his eyes. On a couple occasions he not only approved of crimes, but also instigated them.
Scholars concerning his moral character and sincerity during the last three centuries have expressed many opinions. Many of these opinions are biased either by an extreme hatred towards Islam and its founder or by an exaggerated admiration, coupled with a hatred for Christianity.