 Equally, the cloth and the cloaks may have been intended for sale, as it was unlikely that such a quantity of luxury goods were kept for the exclusive use of the Jews.However, these commercial activities led to some resentment that is similar to the economic causes that were behind persecutions in many other countries throughout history.During the reign of Caliph Umar (634–644), the Jewish community of Khaybar were transported alongside the Christian community of Najran to the newly conquered regions of Syria and Iraq.