harass smaller parties of Muslim ships, and Saladin decided to clear it from his path. Sultan of Egypt According to Imad ad-Din, Nur ad-Din wrote to Saladin in June 1171, telling him to reestablish the Abbasid caliphate in Egypt, which Saladin coordinated two months later after additional encouragement by Najm ad-Din al-Khabushani, the Shafi'i faqih, who vehemently opposed Shia rule in the country. Several Egyptian emirs were thus killed, but al-Adid was told that they were killed for rebelling against him. He then fell ill or was poisoned according to one account. While ill, he asked Saladin to pay him a visit to request that he take care of his young children, but Saladin refused, fearing treachery against the Abbasids, and is said to have regretted his action after realizing what al-Adid had wanted. He died on 13 September, and five days later, the Abbasid khutba was pronounced in Cairo and al-Fustat, proclaiming al-Mustadi as caliph. On 25 September, Saladin left Cairo to take part in a joint attack on Kerak and Montréal, the desert castles of the Kingdom of Jerusalem, with Nur ad-Din who would attack from Syria. Prior to arriving at Montreal, Saladin however withdrew back to Cairo as he received the reports that in his absence the Crusader leaders had increased their support to the traitors inside Egypt to attack Saladin from within and lessen his power, especially the Fatimid who started plotting to restore their past glory. Because of this, Nur ad-Din went on alone. During the summer of 1173, a Nubian army along with a contingent of Armenian former Fatimid troops were reported on the Egyptian border, preparing for a siege against Aswan. The emir of the city had requested Saladin's assistance and was given reinforcements under Turan-Shah, Saladin's brother. Consequently, the Nubians departed; but returned in 1173 and were again driven off. This time, Egyptian forces advanced from Aswan and captured the Nubian town of Ibrim. Saladin sent a gift to Nur ad-Din, who had been his friend and teacher, 60,000 dinars, "wonderful manufactured goods", some jewels, and an elephant. While transporting these goods to Damascus, Saladin took the opportunity to ravage the Crusader countryside. He did not press an attack against the desert castles but attempted to drive out the Muslim Bedouins who lived in Crusader territory with the aim of depriving the Franks of guides. On 31 July 1173, Saladin's father Ayyub