Verily, those who have attained to faith and do good works, and are constant in prayer, and dispense charity - they shall have their reward with their Sustainer, and no fear need they have, and neither shall they grieve.
Al-Baqara (The Cow) Verse 277
The Prophet said, "None of you will have faith till he wishes for his (Muslim) brother what he likes for himself."
Sahih Bukhari: Volume 1, Book 2, Number 12