[Pooya/Ali Commentary 2:276] Mahaq means to blot out, to render unfortunate, to withdraw one's blessings from Allah does not bless usury, and He causes charitable deeds to prosper. The act of usury itself lights the fuse of the ultimate destruction of the system that builds, supports and perpetrates it. According to the Holy Prophet, he who upholds usury as permissible is a kafir. It is generally known among the Muslims that to use the gains obtained from usury is as wicked and as satanic as marrying one's own mother.