In his book Uthman, Taha Hussain has raised the issue why no help came from the provinces in time, when Uthman had made a formal appeal for help. Taha Hussain is inclined to the view that the people were tired of the long rule of Uthman, and they wanted a change. Taha Hussain has dropped hints that even Governors like Muawiyah who were devoted to Uthman deliberately delayed such help for political considerations.
"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