Thomas Hughes (priest)  

"The Jews, however, were still unimpressed and were slow to acknowledge Muhammad, although ho claimed to be but the teacher of the creed of Abraham. Muhammad sought but a plausible excuse for a rupture with the sons of Israel, and an opportunity soon presented itself. A Muslim girl was insulted by a youth a a Jewish tribe, and, taking advantage of tie circumstance, the whole tribe was attacked, proscribed, and banished. Their houses and lands were confiscated and divided amongst the Faithful. In the course of the same year, Ka'b ibn al-Ashraf, a Jew, was assassinated because he annoyed the Muslims with his verses."--A Dictionary of Islam by Thomas Patrick Hughes