On the occasion of the battle of Uhud, the Jews of Banu Nadeer resorted to treachery. They entered into secret negotiations with the Quraish and even planned to assassinate the Holy Prophet. After the battle of Uhud, these Jews were asked to explain their conduct and when they could offer no satisfactory explanation they were served with an ultimatum of war. They accepted the ultimatum and shut themselves in their strongholds. After a few days they surrendered. They were required to leave Madina. They were allowed to take away whatever movable property they could except arms.