Abdullah b Masud was an eminent companion of the Holy Prophet. He was among the early converts to Islam. He migrated to Abyssinia and was supported there by Uthman. On return from Abyssinia he migrated to Madinah. He entered into brotherhood with Muadh b Jabal of the Ansars. He participated in all the campaigns undertaken by the Holy Prophet. On the occasion of the battle of Badr, he had the distinction of cutting off the head of Abu Jahl the arch enemy of Islam. In Madinah he became an attendant of the Holy Prophet. Whenever the Holy Prophet came to the mosque Abdullah b Masud held his shoes. On Fridays' Abdullah b Masud while reading the Holy Prophet to the pulpit carried his scepter in front of him.
"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