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EDMUND HAYES is a lecturer in the History of Islam at Leiden University. He leads the ERC Horizon project 'Embodied Imamate: Mapping the Development of the Early Shi?i Community 700-900 CE'. PETRA M. SIJPESTEIJN is Professor of Arabic at Leiden University. She has held guest professorships and fellowships in Paris, Munich, Princeton, Doha, Cairo, Alexandria, and Tunis, and in 2022 was elected corresponding foreign member in the Académie des Inscriptions et Belles Lettres of the Institut de France. She has published numerous books and articles, including (edited with Jelle Bruning and Janneke H. M. de Jong) Egypt and the Eastern Mediterranean World: From Constantinople to Baghdad, 500-1000 CE (Cambridge, 2023). |