It is alleged that when Abdullah b Masud came to Madinah, he saw Uthman in the mosque. Some hot words were exchanged between the two, and Uthman had Abdullah b Masud expelled from the mosque. Uthman is further said to have stopped the stipend of Abdullah b Masud. It is further stated that Abdullah b Masud wanted to go to-Syria for undertaking Jihad, but Othrnan did not grant him the permission, Abdullah b Masud died in Madinah in 6 54 C.E. two years before the assassination of Uthman. According to one account when Abdullah b Masud fell sick, Uthman visited him and the two were reconciled. According to another account Abdullah b Masud died without being reconciled to Uthman.
"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