Early in the year I 811, the preparations for an expedition against the Wahhbis in Arabia being complete, all the Mameluke beys then in Cairo were invited to the ceremony of investing Mehemet Alis favorite son, TUslin, with a pelisse and the command of the army.
Thus ended Mehemet Alis first massacre of his too confiding enemies.
Mehemet Alis great strength lay in the devotion of the citizens of Cairo, who looked on him as a deliverer from their afflictions; and great numbers armed themselves, advising constantly with Mehemet Ali, having the sayyid Omar and the sheiks at their head, and guarding the town at night.
On the 17th of August 1805 the dam of the canal of Cairo was to be cut, and some chiefs of Mehemet Alis party wrote, informing them that he would go forth early on that morning with most of his troops to witness the ceremony, inviting them to enter and seize the city, and, to deceive them, stipulating for a certain sum of money as a reward.
Abdullah, their chief, was made prisoner, and with his treasurer and secretary was sent to Constantinople, where, in spite of Ibrahims promise of safety, and of Mehemet Alis intercession in their favor, they were put to death.