As Ali returned to the Muslim camp, the Holy Prophet went forward to greet him, and hailed him as the Victor of Khyber. There was great rejoicing in the Muslim camp at this great victory. As a result of the victory, in accordance with the Jewish law, all male Jews could be executed. The Jews pleaded for mercy and undertook to pay one half of the produce of their lands to the Muslims as annual tribute. The Holy Prophet took a lenient view. He accepted the terms offered by the Jews and a treaty was executed accordingly. The Jews undertook to remain faithful to the Muslims and accepted their dominance.
A prominent Jew lady, Zainab held a feast in the honor of the Holy Prophet and his companions. At the dinner the Holy Prophet first took a morsel of meat and after chewing it threw it aside saying that the meat was poisoned. A companion Bashr ate a good deal of meat and he died on the spot. The feast ended in confusion. Zainab was put to explanation and she admitted her guilt. She pleaded that she had poisoned the meat thinking that if Muhammad (peace be On him) was a false prophet, the world would get rid of him.
Accounts differ about the fate of Zainab. According to one account, she became a Muslim and was pardoned. According to another account she was executed.