An attempt to seize a rich caravan belonging to a merchant of Mecca was the signal for battle. The forces of Mecca, hastily gathered, went out against the Moslem host, and, after hard fighting, were dispersed. There was joy in Medina when the "swift dromedary" of the Prophet appeared at the house of prayer and the news was made known; but in Mecca was bitter hatred and woe, fitly expressed in the grim words of the wife of the slain leader of the caravan: "Not till ye again wage war against Mohammed and his fellows shall tears flow from my eyes! If tears would wash away grief, I would now weep, even as ye; but with me it is not so!"
From that time Mohammed gave up all pretence of winning converts by peaceable methods; henceforth he was to live and die a man of the sword. Deterioration of character was a more or less natural outcome of this change. It may have been necessary to invent visions in order to convince the ignorant people of Medina that their victory was due, not to their own strength, but to the aid of the angels of Allah, who would always fight upon their side; but we cannot say the same of the applause, given openly by Mohammed in the mosque, to the cold-blooded murderer of a woman who had composed some verses throwing doubt upon the right of the Prophet to glory in the death of the men of his own tribe. Nor was this the only instance of revenge and cruelty. It was but too clear that Mohammed, from a calm and peaceful prophet, had been transformed into a warlike chieftain, bent on subduing all others to his will. When Mecca declared battle, he went out to the field, clad in full armour, sword in hand. At first all went well with the Moslems. Then Mohammed was struck in the mouth and cheek, and a cry went up, "The Prophet is slain! Where is now the promise of Allah?" Their cry was drowned in the triumphant shouts of the men of Mecca, "War hath its revenge; Allah is for us—not for you!"
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 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 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.
Still more surprised were the Moslems, all of whom were burning to fight, when they found the Prophet quietly accepting the terms offered by the men of Mecca, when they promised to permit future pilgrimages, though they would not allow him to enter the city on that occasion.
Once recognised by his own birthplace, Mohammed determined to bring about his most ambitious project, and to summon all the kingdoms of the earth to acknowledge Islam.
He even had a signet-ring engraved with the words "Mohammed, the Apostle of Allah," and, in a spirit of sublime self-confidence, sent it to the King of Persia, to the Byzantine Emperor Heraclius, and to the rulers of Syria, Abyssinia, and Egypt. Nothing came of it, of course, and meantime the earlier desire of his heart had been gratified. The pilgrimage to Mecca had been undertaken in safety, and the Prophet had worshipped after the manner of Islam within the very walls of the sacred Kaaba.