Ghassan Abdul‐Jabbar has taught and studied hadith in schools and universities in Pakistan for over 25 years. He holds a PhD from the University of Chicago and has studied in classical mosque‐schools in Pakistan. His previous research has focused on the hadith expert Muḥammad ibn Ismāʿīl al‐Bukhārī and the history of the development of hadith studies in the Islamic world.

Herbert Berg is Professor of International Studies at the University of North Carolina Wilmington. He holds a PhD in the study of religion from the University of Toronto. His research focuses on Islamic origins, the Nation of Islam, and method and theory in the study of early Islam.

Daniel W. Brown is Director of the Institute for the Study of Religion in the Middle East. He holds a PhD in Islamic Studies from the University of Chicago. His research focuses on themes in nineteenth‐ and twentieth‐century Islamic intellectual history, Islamic modernism, Qurʾanist movements, and Islam in the Subcontinent.

Adis Duderija is Lecturer in the Study of Islam and Society at Griffith University, Brisbane, Australia. He has published extensively on contemporary Islamic hermeneutics, the concept of sunna/hadith, and the Islamic intellectual tradition with specific reference to gender and interfaith dialogue theory.

Andreas Görke is Senior Lecturer in Islamic Studies at the University of Edinburgh. He received his PhD from the University of Hamburg and his habilitation from the University of Basel. His research interests include early Islamic history and historiography, the life of the Prophet Muhammad, Qurʾan and Qurʾanic exegesis, hadith, Islamic law, the transmission of Arabic manuscripts, Islam in its late antique environment, and the impact of modernity on Muslim thought.

William A. Graham is Murray A. Albertson Research Professor of Middle Eastern Studies and University Distinguished Service Professor Emeritus, Harvard University. A fellow of the American Academy of Arts and Sciences and the American Philosophical Society, he has held John Simon Guggenheim and Alexander von Humboldt research fellowships. His scholarship focuses on early Islamic religious history and textual traditions and also on topics in the history of religion.

Hüseyin Hansu is Professor of Hadith Science at Istanbul University. He completed his PhD in hadith science at Ankara University in 2002. His scholarly work has focused on early Islamic theology and the history of hadith, and he is the author of Mutezile ve Hadis, Mutevatir Haber, and coeditor with Mehmet Keskin of Kitab al‐Tahrish.

Mustafa Macit Karagözoğlu is Assistant Professor in the Hadith Department of the Marmara University Divinity School in Istanbul, Turkey. He received his PhD from Marmara University in 2013 and was a visiting researcher at UCLA in 2009–2010 and at Georgetown University in 2015–2016. His research has included analysis of the classical Arabic literature on weak hadith transmitters (ḍuʿafā), textual criticism, hadith methodology, anthropology of Islam, and Muslim historiography.

Christopher Melchert is Professor of Arabic and Islamic Studies at the University of Oxford. He holds degrees in history from the University of California at Santa Cruz (AB, 1977), Princeton University (AM, 1984), and the University of Pennsylvania (PhD, 1992). His research has focused on Islamic law, hadith, and piety (early Sufism and its antecedents).

Ahmad Pakatchi is Associate Professor, head of the Department of Qurʾan and Hadith Studies, and a member of the academic staff in the Faculty of Theology at Imam Sadeq University in Tehran. He is also head of the Department of Linguistics and Semiotics of the Qurʾan at the Institute for Humanities and Cultural Studies and serves on the Advisory Committee of Encyclopedia Islamica (Brill).

Aiyub Palmer is Professor of Arabic and Islamic Studies at the University of Kentucky. He holds a PhD from the University of Michigan. His research focuses on Sufism, sainthood, and authority in early Islam.

Pavel Pavlovitch is Professor in Medieval Islamic civilization at the Center for Oriental Languages and Cultures, Sofia University St Kliment Ohridski. He holds a BA degree from Baghdad University and a PhD and Doctor of Sciences degrees from Sofia University. He specializes and publishes in the fields of early Islamic history and jurisprudence and on methodology of hadith studies.

Jawad Anwar Qureshi teaches on the Zaytuna College graduate program in Islamic texts. He holds an MA in religious studies from the University of Georgia and earned a PhD in Islamic Studies from the University of Chicago Divinity School with a dissertation on Saʿ īd Ramaḍān al‐Būṭī. His research focuses on contemporary Islamic thought, Qurʾanic studies, and Sufism.

Gregor Schoeler is Professor Emeritus at the University of Basel, where he held the chair of Islamic Studies from 1982 to 2009. He studied Islamic studies and Semitic languages at the University of Marburg, the Goethe University of Frankfurt, and the University of Giessen. His research includes the Dīwān of Abū Nuwās, the translation of al‐Maʿarrī's Epistle of Forgiveness (with Geert Jan van Gelder), the interaction of written and oral tradition in Islam, and studies on the biography of the Prophet Muhammad.

Roberto Tottoli is Professor of Islamic Studies at the University of Naples L'Orientale, Department of Asia, Africa and the Mediterranean, where he received his PhD in 1996. His research has included work on biblical traditions in Islam, medieval Islamic literature and hadith. He is currently working on Qurʾan editions and translation in sixteenth‐ and seventeenth‐century Europe.