Moudi Abdullah Al-Sarhan. "Diwans of “Al Nazar” and “Al Tahaqiq” and their Effect
On the Financial System in the Ayyubid period (567-648 AH / 1171-1250 AD)", Annals of the Faculty of Arts, Ain Shams University, 50, 9, 2022, 51-66. doi: 10.21608/aafu.2022.258583