An-Nisa 4:161

Waakhthihimu arribawaqad nuhoo AAanhu waaklihim amwala annasibilbatili waaAAtadna lilkafireenaminhum AAathaban aleema

And [for] their taking of usury while they had been forbidden from it, and their consuming of the people's wealth unjustly. And We have prepared for the disbelievers among them a painful punishment.

and for their charging Ribā (usury or interest) while they were forbidden from it, and for their devouring of the properties of the people by false means. We have prepared, for the disbelievers among them, a painful punishment.