Verse 54 of Sura 25 reads {25:54}: "And He it is Who created man from water, and has appointed for him kindred by blood, and kindred by marriage and your Lord is all powerful".
According to traditions "kindred by blood" and "kindred by marriage" refers to Ali.
"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