On the authority of Abu Musa Al Ashari (May Allah be pleased with him),who said: The prophet (peace and blussings of Allah be upon him) Said : "Charity is necessary for every nuslem " The prophet was asked : what if a person has nothing?, the prophet replied :" He should work with his own hands for his benefit and then give something out of such earning in charity " The companion asked : what if he is not able to work ?, The prophet said :"He should help poor and needy persons " The companian further asked : what if he cannot do even that ?, The prophet said :" He should urge others to do good " The companian submitted :what if he lacked that also ? , the prophet said :" He should check himself from doing evil ; that is also charity