​FIRMAN (an adaptation of the Per. fermān, a mandate or patent, cognate with the Sanskrit pramāna, a measure, authority), an edict of an oriental sovereign, used specially to designate decrees, grants, passports, &c., issued by the sultan of Turkey and signed by one of his ministers. A decree bearing the sultan’s sign-manual and drawn up with special formalities is termed a hatti-sherif, Arabic words meaning a line, writing or command, and lofty, noble. A written decree of an Ottoman sultan is also termed an irade, the word being taken from the Arab. irādā, will, volition, order.