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".
"When a person dies, his works end, except for three: ongoing charity, knowledge that is benefited from, and a righteous child who prays for him."
Prophet Mohammed (PBUH)
"The best of what a man leaves behind are three: a righteous child who supplicates for him, ongoing charity the reward of which reaches him, and knowledge that is acted upon after him."
Sunan Ibn Mājah
"Every day two angels come down from Heaven and one of them says, 'O Allah! Compensate every person who spends in Your Cause,' and the other (angel) says, 'O Allah! Destroy every miser.'"
Sahih Bukhari