Of the three Jewish tribes of Medina, the Banu Nadir and the Banu Qaynuqa were expelled in the course of Muhammad's rule. On the other hand, the Banu Qurayza tribe was eliminated by Muhammad in the aftermath of the Battle of the Trench. The tribe was accused of colluding with Meccan enemies and besieged. When they surrendered, all grown men were executed and women and children were enslaved. Muhammad is recorded as saying that he would expel all Jews and Christians from Arabia, although this was not carried out until the reign of Umar.