The monastery also possesses the firman of Mahommed II.
Owners of the land in which a mine is located have a prior right to work such mine under imperial firman, on the obtention of which a duty of £T4 is payable; if they do not work it the concession may be granted to others, on payment of a certain compensation to the landowner.
The firman was undoubtedly illegal, as it violated a convention possessing a quasi-international sanction, but the Christians were unable to resist, and the powers abstained from intervention.
The latter refused to lay down their arms until a firman was issued (July 1858), confirming the promised concessions.
Ismail also obtained (July 1875) a firman from the sultan of Turkey making over Zaila to Egypt in return for an increase of £15,000 yearly to the tribute paid to the Porte.