In the 4th year of the Hijrat, the Banu Nazir tribe of the Jews plotted to murder the Prophet pbuh and at the instigation of the Quraish planned to rise against the Muslims. 'The Prophetpbuh sent them a message to leave Madinah within ten days. But they rejected it and shut themselves up in their fortresses. At this the Prophetpbuh led an army against them and laid siege to their forts. After a siege of two weeks, the Jews surrendered. They were exiled from Madinah.