[2:276] God effaces usury, but He augments voluntary almsgivings with interest. God loves not any guilty ingrate.
What is by His leave in different behaviors is connected to good things (fa-maqrūn bi'l-khayrāt) and accompanied by blessings (wa-maṣḥūb bi'l-barakāt), while that which follows whims will be effaced - the end of such a one's affair is loss.