governor of Hama, mediated a peace agreement between him and Sinan. Saladin had his guards supplied with link lights and had chalk and cinders strewed around his tent outside Masyaf—which he was besieging—to detect any footsteps by the Assassins. According to this version, one night Saladin's guards noticed a spark glowing down the hill of Masyaf and then vanishing among the Ayyubid tents. Presently, Saladin awoke to find a figure leaving the tent. He saw that the lamps were displaced and beside his bed laid hot scones of the shape peculiar to the Assassins with a note at the top pinned by a poisoned dagger. The note threatened that he would be killed if he did not withdraw from his assault. Saladin gave a loud cry, exclaiming that Sinan himself was the figure that had left the tent. Another version claims that Saladin hastily withdrew his troops from Masyaf because they were urgently needed to fend off a Crusader force in the vicinity of Mount Lebanon. In reality, Saladin sought to form an alliance with Sinan and his Assassins, consequently depriving the Crusaders of a potent ally against him. Viewing the expulsion of the Crusaders as a mutual benefit and priority, Saladin and Sinan maintained cooperative relations afterwards, the latter dispatching contingents of his forces to bolster Saladin's army in a number of decisive subsequent battlefronts. Return to Cairo and forays in Palestine After leaving the an-Nusayriyah Mountains, Saladin returned to Damascus and had his Syrian soldiers return home. He left Turan Shah in command of Syria and left for Egypt with only his personal followers, reaching Cairo on 22 September. Having been absent for roughly two years, he had much to organize and supervise in Egypt, namely fortifying and reconstructing Cairo. The city walls were repaired and their extensions laid out, while the construction of the Cairo Citadel was commenced. The deep Bir Yusuf ("Joseph's Well") was built on Saladin's orders. The chief public work he commissioned outside of Cairo was the large bridge at Giza, which was intended to form an outwork of defence against a potential Moorish invasion. Saladin remained in Cairo supervising its improvements, building colleges such as the Madrasa of the Sword Makers and ordering the internal administration of the country. In November 1177, he set out upon a raid into Palestine; the Crusaders had recently forayed into the territory of Damascus, so Saladin saw