Say: "If your fathers and your sons and your brothers and your spouses and your clan, and the worldly goods which you have acquired, and the commerce whereof you fear a decline, and the dwellings in which you take pleasure - [if all these] are dearer to you than God and His Apostle and the struggle in His cause, then wait until God makes manifest His will; and [know that] God does not grace iniquitous folk with His guidance."
At-Tauba (The Repentance) Verse 24
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