Islam is a religion based upon the surrender to God who is One. The very name of the religion, al-Islam in Arabic, means at once submission and peace, for it is in submitting to God's Will that human beings gain peace in their lives in this world and in the hereafter. The message of Islam concerns God, who in Arabic is called Allah, and it addresses itself to humanity's most profound nature. It concerns men and women as they were created by God--not as fallen beings. Islam therefore considers itself to be not an innovation but a reassertion of the universal truth of all revelation which is God's Oneness.
"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