Assassins, and stop the wrong-doing of the Muslims. He also promised that if Mosul was given to him, it would lead to the capture of Jerusalem, Constantinople, Georgia, and the lands of the Almohads in the Maghreb, "until the word of God is supreme and the Abbasid caliphate has wiped the world clean, turning the churches into mosques". Saladin stressed that all this would happen by the will of God, and instead of asking for financial or military support from the caliph, he would capture and give the caliph the territories of Tikrit, Daquq, Khuzestan, Kish Island, and Oman. Possession of Aleppo Saladin turned his attention from Mosul to Aleppo, sending his brother Taj al-Muluk Buri to capture Tell Khalid, 130 km northeast of the city. A siege was set, but the governor of Tell Khalid surrendered upon the arrival of Saladin himself on 17 May before a siege could take place. According to Imad ad-Din, after Tell Khalid, Saladin took a detour northwards to Aintab, but he gained possession of it when his army turned towards it, allowing him to quickly move backward another c. 100 km towards Aleppo. On 21 May, he camped outside the city, positioning himself east of the Citadel of Aleppo, while his forces encircled the suburb of Banaqusa to the northeast and Bab Janan to the west. He stationed his men dangerously close to the city, hoping for an early success. Zangi did not offer long resistance. He was unpopular with his subjects and wished to return to his Sinjar, the city he governed previously. An exchange was negotiated where Zangi would hand over Aleppo to Saladin in return for the restoration of his control of Sinjar, Nusaybin, and Raqqa. Zangi would hold these territories as Saladin's vassals in terms of military service. On 12 June, Aleppo was formally placed in Ayyubid hands. The people of Aleppo had not known about these negotiations and were taken by surprise when Saladin's standard was hoisted over the citadel. Two emirs, including an old friend of Saladin, Izz al-Din Jurduk, welcomed and pledged their service to him. Saladin replaced the Hanafi courts with Shafi'i administration, despite a promise that he would not interfere in the religious leadership of the city. Although he was short of money, Saladin also allowed the departing Zangi to take all the stores of the citadel that he could travel with and to