Verse 36 of Sura 24 reads {24:36}:"The lamp of light is lit in houses which Allah has allowed to be exalted so that His name be remembered in them. Therein He is glorified in the mornings and evenings."
According to traditions, the Holy Prophet said that the "houses" referred to in this verse include the house of Ali and Fatima.
"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