Such, indeed, was the fact. Within a year the murderer of Ka’b was dispatched to the Jewish tribe of Beni an-Nadir--which was suspected of being in secret league with the Koreish--with this commission: “Thus saith the Prophet of the Lord. Ye shall go forth from out of my land within the space of ten days; whosoever after that remaineth behind shall be put to death.” When they protested on the ground that such treatment would be rather severe on a people who had never injured Islam, Mohammed’s envoy merely remarked, “Hearts are changed now,” and abruptly left them. After prolonged and anxious consultation, they decided to hold fast to their fortress--a proceeding so unusual for their race that, when the Prophet heard of it, he shouted in delight: “Allah Akbar! The Jews are going to fight! Great is the Lord!” His enthusiasm was somewhat dampened, however, when he discovered that a lengthy siege failed to dislodge them; accordingly, he determined to hasten matters by destroying the pick of their palm-trees with fire and axe. They protested that this act was both barbarous and contrary to Mosaic law; and, while Mohammed was no longer much interested in Moses, he well knew that his deed was opposed to the unwritten laws of Arabian warfare. The Koran, therefore, was soon adorned with this exculpatory passage: “That which thou didst cut down of the Date-trees, or left of them standing upon their roots, it was by the command of God, that He might abase the evil-doers.” The Beni an-Nadir, in fact, were so completely abased by the relentless siege that they were glad to surrender their lands and go into exile on the generous condition that their lives should be spared.