Giving (infaq) is a defining characteristic of Muslims.
Whatever you give or spend in the way of Allah will be returned to you in manifold increase. Allah, the most Bountiful and the most Loving, commends:
Lend unto God a goodly loan. Whatever good you shall forward on your behalf you shall find it with God, as better and richer in reward. [al-Muzzammil 73: 20.]
Prophet, sallallaahu `alayhi wa sallam ( may Allaah exalt his mention ), said: A generous person is close to Allah, close to Paradise, close to people, and far from Hell. However, a miserly person is far from Allah, far from Paradise, far from people, but close to Hell. Allah loves more an ignorant man who is generous than a worshipper who is miserly. (Tirmidhi.)