In his book A Study of Islamic History, Prof. K. Ali observes: "Uthman was upright, dutiful and generous. In chastity and integrity, Uthman was as firm as a mountain. Modesty was the salient feature of his character. The Prophet himself was so much pleased with him that he gave his two daughters in marriage to him. He was very rich but he contented himself with plain dress. His services in the recension of the Holy Quran were invaluable. He sacrificed his own life rather than wield the sword against the rebels. A man who sacrificed his life for the solidarity of Islam, and the good of his subjects can easily be called a true patriot and a benign ruler".