Ibn Jarir narrated that he was not a prophet but he was a righteous man. He supported his people to suffice their needs and administered justice among them. That is why he was called Dhul-Kifl .Dhul-Kifl literally means "possessor of. or giving. a double requital or portion". (Source: A. Yusuf All, The Holy Quran: Translation and Commentary, footnote 2743 to murak 2 1:85.) (Editorm note)
"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