away into the desert. Ali crawled into Mohammed’s bed to make it look like he was still there. When the would-be assassins burst in, they were furious to find Ali, but they spared the kid and sent a search party out to hunt down the Prophet. Mohammed and Abu Bakr had made it only to a cave near Mecca, but legend has it that a spider built its web across the mouth of the cave after they entered. When the posse came by and saw the web, they assumed no one could be inside, and so passed on. Mohammed and Abu Bakr made it safely to Yathrib, by which time some of Mohammed’s other followers had moved there too, and the rest soon followed. Most of these Meccan emigrants had to leave their homes and property behind; most were making a break with family members and fellow tribesmen who had not converted. But at least they were coming to a place where they would be safe, and where their leader Mohammed had been invited to preside as the city’s highest authority, the arbiter among the rival tribal chieftains.
True to his promise, Mohammed sat down with the city’s fractious tribes to hammer out a covenant (later called the Pact of Medina.) This covenant made the city a confederacy, guaranteeing each tribe the right to follow its own religion and customs, imposing on all citizens rules designed to keep the overall peace, establishing a legal process by which the tribes settled purely internal matters themselves and ceded to Mohammed the authority to settle intertribal disputes. Most important, all the signatories, Muslim and non-Muslim, pledged to join all the others to defend Medina against outside attack. Although this document has been called the first written constitution, it was really more of a multiparty treaty.
Mohammed also appointed one Yathribi Muslim to mentor and help each family of Meccan Muslims. The native was to host the newcomer and his family, get them settled, and help them start a new life. From this time on, the Yathribi Muslims were called the Ansar, “the helpers.”
The name of the city changed too. Yathrib became Medina, which simply means “the city” (short for a phrase that meant “city of the prophet”). The emigration of the Muslims from Mecca to Medina, is known as the Hijra (often spelled Hegira in English.) A dozen years later, when Muslims created their own calendar, they dated it from this event because the Hijra, they felt, marked the pivot of history, the turning point in their fortunes, the moment that divided all of time into before the Hijra (BH) and after the Hijra (AH).
Some religions mark their founder’s birthday as their point of origin; some, the day he died; and still others, the moment of their prophet’s enlightenment or his key interaction with God. In Buddhism, for example, the religion begins with Siddhartha Gautama’s achievement of enlightenment under the bodhi tree. Christianity attributes key religious significance to Christ’s death and resurrection (as well as his birth.) Islam, however, pays little attention to Mohammed’s birthday. Growing up as a Muslim, I didn’t know when he was born, because nothing special happened that day in Afghanistan. Some countries, such as Egypt, commemorate the day more elaborately, but still, there’s no analog to Christmas in Islam, no “Mohammedmas.”
The revelation in the cave is commemorated as the most sacred night in Muslim devotions: it is the Night of Power, Lailut al-Qadr, which falls on or near the twenty-seventh day of Ramadan, the month of fasting. But in the Muslim calendar of history, that event occurred ten years before the really crucial turning point: the Hijra.
What makes moving from one town to another so momentous? The Hijra takes pride of place among events in Muslim history because it marks the birth of the Muslim community, the Umma, as it is known in Islam. Before the Hijra, Mohammed was a preacher with individual followers. After the Hijra, he was the leader of a community that looked to him for