Whatever is in the heavens and whatever is in the earth is Allah's; and whether you manifest what is in your minds or hide it, Allah will call you to account according to it; then He will forgive whom He pleases and chastise whom He pleases, and Allah has power over all things.
Al-Baqra Verse 284
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