The day was lost; and it needed all the Prophet's ingenuity to account for it satisfactorily to those whom he had so often assured of the certain protection of Allah. From that time possibly dates the belief of the Moslems that he who dies in battle against the unbeliever is so certain of the joys of Paradise that it is the survivor rather than the slain who should be pitied. Meantime, before the contest with Mecca could be {29} finally settled, Mohammed undertook to crush, once for all, the Jewish power in Arabia. It seems strange that there should have been such hostility between Jews and Moslems, seeing that both claimed the God of Abraham as the object of their worship; but this was now lost sight of in view of the natural refusal of the former to acknowledge Mohammed as the chief of all prophets, and his sacred book, the Koran, as superior to their "Book of the Law," the Old Testament. By dint of persecuting those who dwelt within the walls of Medina, and of besieging their cities elsewhere, Mohammed compelled the Jews to migrate to Syria, leaving their abandoned lands and cities to him. The event finds special mention in the Koran. "Allah it is who drove out the People of the Book, _(the Jews_), who believed not, to join the former exiles. Ye thought not they would go forth; verily, _they_ thought that their fortresses would defend them against Allah; but Allah came upon them from a quarter unexpected and covered their hearts with dread." Soon after this event, Ali, his faithful nephew, was still more closely united with Mohammed by his marriage with Fatima, the Prophet's daughter; and thus he of whom Mohammed was wont to say, "I am the city of wisdom, but Ali is its door," was joined to one of the "four perfect women" spoken of by the Prophet. It was now six years since Mohammed had left Mecca, during which time he had never ceased to yearn and plan for his triumphant return. The Kaaba, save for its idols, was sacred to him as the home of the worship of Allah, and his heart was bitter within him when he reflected that he and his followers had been so long forbidden the yearly pilgrimage thither. So he {30} determined to put the temper of the Meccans to the test by making a pilgrimage, with a sufficient number of followers to resist any aggressive act of hostility. As they approached the sacred borders, the camel of Mohammed refused to go further. "The creature is obstinate and weary," said the Moslems. "Not so," answered Mohammed, "the hand of Allah restrains her. If the Meccans make any demand of me this day, I will grant it. Let the caravan halt." "There is no water here," they cried in dismay, "how shall we halt?" But Mohammed ordered that a dried-up well should be opened, and at once water bubbled up to the surface.