When Umar died, both Ali and Uthman wanted to lead the funeral prayer. Abdul Rahman b Auf, however, advised that as both of them were candidates for the office of the Caliph they should not lead such prayer. The funeral prayers were accordingly led by Suhaib, the man who had been authoriZed by Umar to lead the ordinary prayers. Umar was put in the grave by all the five members of the Selection Committee constituted by him.
Immediately after the burial of Umar, the Selection Committee constituted by him to nominate his successor met in session. As Talha b Ubaidullah was still out of Madinah, the meeting of the Committee was attended by five persons only. The Committee had a long session for two days, but it was unable to arrive at any decision. The differences among the parties were acute, and no reconciliation appeared to be in sight.
"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