o believers fear allah and give up that interest which is still due to you if you are true believers but if you do not do so then you are warned of the declaration of war against you by allah and his messenger. if however you repent even now you are entitled to your principal do no wrong and no wrong will be done to you.
يا أيها الذين آمنوا اتقوا الله وذروا ما بقي من الربا إن كنتم مؤمنين فإن لم تفعلوا فأذنوا بحرب من الله ورسوله وإن تبتم فلكم رءوس أموالكم لا تظلمون ولا تظلمون