From an original engraving published 1881.
Info from Wiki: Early in the year 1811, all the Mamluk beys then in Cairo were invited to the ceremony in the Cairo citadel for investing Muhammad Ali's favorite son, Tusun, with a pelisse and the command of the army. On March 1, 1811, Shahin Bey and the other chiefs (with one exception) repaired with their retinues to the citadel, and were courteously received by the Pasha. Having taken coffee, they formed in procession, and, preceded and followed by Muhammad Ali's troops, slowly descended the steep and narrow road leading to the great gate of the citadel.
As soon as the Mamluks arrived at the citadel's gate it was suddenly shut before them. The last of those to leave before the gate was shut were Albanians under Salih Kush. To these troops, their chief now made known the Pasha's orders to massacre all the Mamluks within the citadel.
Four hundred and seventy Mamluks entered the citadel; and of these very few, if any, escaped. However, folklore has it that one of the Mamluk beys succeeding in escaping by leaping with his horse from the ramparts, and alighted uninjured although the horse was killed by the fall. Others say that he was prevented from joining his comrades, and discovered the treachery while waiting without the gate. He fled and made his way to Syria.
The massacre of the Mamluks at the Cairo citadel was the signal for an indiscriminate slaughter of the Mamluks throughout Egypt, orders to this effect having been transmitted to every governor. In Cairo itself the houses of the Mamluk beys were given over to the soldiery. During the two following days the Muhammad Ali Pasha and his son Tusun rode about the streets and tried to stop the atrocities; but order was not restored until 500 houses had been pillaged. The heads of the beys were sent to Istanbul.