Islam migrants ("Muhajirun"), Muhammad in Medina established his political and religious authority. The Constitution of Medina was formulated, instituting a number of rights and responsibilities for the Muslim, Jewish, Christian and pagan communities of Medina, bringing them within the fold of one community—the Ummah. The Constitution established: All the tribes signed the agreement to defend Medina from all external threats and to live in harmony amongst themselves. Within a few years, two battles took place against the Meccan forces: first, the Battle of Badr in 624 – a Muslim victory, and then a year later, when the Meccans returned to Medina,
Battle of Marj Ayyun his victory by destroying the newly built Le Chastellet stronghold at the Battle of Jacob's Ford. In the years after Marj Ayyun, the Frankish leaders became more cautious and the next two campaigns of note, the Battle of Belvoir Castle (1182) and the Battle of Al-Fule (1183) were strictly defensive in nature. Soleim Al-Razi was a Muslim physician who compassionately treated wounded crusaders captured by the Muslim forces. Battle of Marj Ayyun In the Battle of Marj Ayyun, alternately Marj Ayyoun, an Ayyubid army commanded by Saladin defeated a Crusader army led by King Baldwin IV of Jerusalem on 10