In his elegy Qasim b Umayya b Abi Al Salat said:
"I swear by God that the murder of Uthman is the most
heinous crime.
By assassinating a person who was so dear to the Holy
Prophet. You have incurred the wrath of the Holy Prophet.
By murdering the Caliph you have betrayed your faith in Islam.
You are traitors to Islam;
And grievous will be your punishment both in this world and the next.
"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