In Fatimid Cairo (AD 969–1171), a centre for collection of tolls and taxes.
Al-ma'adin al-batin
Wakeel
Wa`d
Bai‘ al-muhaqalah
Bai‘ al-muqayadah
Hulwan al-kahin
Bai‘ al-munabadhah
Bai‘ al-sarf
Diwan al-musadarin
Participation