The Messenger of Allah ﷺ cursed the one who accepted usury, the one who paid it, the witness to it, and the one who recorded it.  

لَعَنَ رَسُولُ اللَّهِ ﷺ آكِلَ الرِّبَا وَمُوكِلَهُ وَشَاهِدَهُ وَكَاتِبَهُ