Talha b Ubaidullah belonged to the Taym section of the Quraish. He was closely related to Abu Bakr. He became a Muslim at the young age of fifteen, and was among the early Muslim converts. He migrated to Madina in 622 C.E., along with the family of Abu Bakr.
He played an important part in the battle of Uhud. He received numerous wounds in his effort to save the Holy Prophet. He pulled the Holy Prophet from the ditch in which he had fallen. He was also very active in the battle of the Trench. He was one of the persons to whom Holy Prophet had given the tidings of paradise. He was one of the six members of the board which had been constituted by Umar to choose his successor.
"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