Interest

But those who consume interest will rise on Judgment Day like one possessed by Satan. That is because they claim, ‘Trade is just like interest,’ but Allah has forbidden interest and permitted trade. Whoever receives this warning and stops may keep what was earned in the past; Allah will judge them. But those who persist will be companions of the Fire, where they will remain forever.

2:275Those who swallow usury cannot rise up save as he ariseth whom the devil hath prostrated by (his) touch. That is because they say: Trade is just like usury; whereas Allah permitteth trading and forbiddeth usury. He unto whom an admonition from his Lord cometh, and (he) refraineth (in obedience thereto), he shall keep (the profits of) that which is past, and his affair (henceforth) is with Allah. As for him who returneth (to usury) - Such are rightful owners of the Fire. They will abide therein.