battle near Belvoir Castle, but he was unable to destroy the Christian army and could not logistically sustain his own army any longer, so he withdrew across the river. In August, he passed through the Beqaa Valley to Beirut, where he rendezvoused with the Egyptian fleet and laid siege to the city. Failing to make any headway, he withdrew after a few days to deal with matters in Mesopotamia. Kukbary (Muzaffar ad-Din Gökböri), the emir of Harran, invited Saladin to occupy the Jazira region, making up northern Mesopotamia. He complied and the truce between him and the Zengids officially ended in September 1182. Prior to his march to Jazira, tensions had grown between the Zengid rulers of the region, primarily concerning their unwillingness to pay deference to Mosul. Before he crossed the Euphrates, Saladin besieged Aleppo for three days, signaling that the truce was over. Once he reached Bira, near the river, he was joined by Kukbary and Nur al-Din of Hisn Kayfa and the combined forces captured the cities of Jazira, one after the other. First, Edessa fell, followed by Saruj, then Raqqa, Qirqesiya and Nusaybin. Raqqa was an important crossing point and held by Qutb al-Din Inal, who had lost Manbij to Saladin in 1176. Upon seeing the large size of Saladin's army, he made little effort to resist and surrendered on the condition that he would retain his property. Saladin promptly impressed the inhabitants of the town by publishing a decree that ordered a number of taxes to be canceled and erased all mention of them from treasury records, stating "the most miserable rulers are those whose purses are fat and their people thin". From Raqqa, he moved to conquer al-Fudain, al-Husain, Maksim, Durain, 'Araban, and Khabur—all of which swore allegiance to him. Saladin proceeded to take Nusaybin which offered no resistance. A medium-sized town, Nusaybin was not of great importance, but it was located in a strategic position between Mardin and Mosul and within easy reach of Diyarbakir. In the midst of these victories, Saladin received word that the Crusaders were raiding the villages of Damascus. He replied, "Let them... whilst they knock down villages, we are taking cities; when we come back, we shall have all the more strength to fight them." Meanwhile, in Aleppo, the emir of the city Zangi raided Saladin's cities to the north and east, such as Balis, Manbij, Saruj, Buza'a,