ʿUthmān ibn Ibrāhīm al-Nābulusī (d. 660/1262), of Palestinian origin, was a leading Egyptian bureaucrat in the court of the Ayyubid sultans. In addition to his pivotal work, The Sword of Ambition, he wrote several works on Egyptian administration and government, including A Presentation of the Living, Eternal God's Work in Regulating the Fayyum, the most extensive tax record that survives from the medieval Middle East.

Luke Yarbrough is Assistant Professor in the Department of Near Eastern Languages and Civilizations at UCLA. His research is concerned with the history of the pre-modern Middle East and North Africa, including inter-communal relations, law and prescriptive discourses, Arabic historiography, the oral transmission of knowledge, and comparative history.

Sherman Jackson is King Faisal Chair in Islamic Thought and Culture and Professor of Religion and American Studies and Ethnicity at the University of Southern California.