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, "A time will come when one will not care how one gains one's money, legally or illegally."
Sahih Bukhari: Volume 3, Book 34, Number 275