Najam Haider is Assistant Professor of Religion at Barnard College of Columbia University. His articles have been published in many journals, including Der Islam, the Journal of Near Eastern Studies, and Islamic Law and Society. His research interests include early Islamic history, Islamic law, and the impact of modernity on the contemporary Muslim world. His first book, The Origins of the Shī'a was published by Cambridge University Press in 2011. He is currently working on a new project that focuses on early Islamic historical writing.