after returning to damascus in july 1149, mu'in ad-din "ate a hearty meal, as was his usual custom, and was seized thereafter by a loosening of the bowels...from this resulted in the disease known as dysentery..." the emir died on august 28 and was buried in the university he had established in the city. as he had been acting as regent for mujir ad-din, the latter took his place as the rightful heir of damascus. mujir ad-din was a weak ruler, however, and by 1154 nur ad-din was fully in control of the city and all of syria.