Conversion to Islam is a phenomenon of immense significance in human history. At the outset of Islamic rule in the seventh century, Muslims constituted a tiny minority in most areas under their control. But by the beginning of the modern period, they formed the majority in most territories from North Africa to Southeast Asia. Across such diverse lands, peoples, and time periods, conversion was a complex, varied phenomenon. Converts lived in a world of overlapping and competing religious, cultural, social, and familial affiliations, and the effects of turning to Islam played out in every aspect of life. Conversion therefore provides a critical lens for world history, magnifying the constantly evolving array of beliefs, practices, and outlooks that constitute Islam around the globe. This groundbreaking collection of texts, translated from sources in a dozen languages from the seventh to the eighteenth centuries, presents the historical process of conversion to Islam in all its variety and unruly detail, through the eyes of both Muslim and non-Muslim observers.

Conversion to Islam is a phenomenon of immense significance in human history. At the outset of Islamic rule in the seventh century, Muslims constituted a tiny minority in most areas under their control. But by the beginning of the modern period, they formed the majority in most territories from North Africa to Southeast Asia. Across such diverse lands, peoples, and time periods, conversion was a complex, varied phenomenon. Converts lived in a world of overlapping and competing religious, cultural, social, and familial affiliations, and the effects of turning to Islam played out in every aspect of life. Conversion therefore provides a critical lens for world history, magnifying the constantly evolving array of beliefs, practices, and outlooks that constitute Islam around the globe. This groundbreaking collection of texts, translated from sources in a dozen languages from the seventh to the eighteenth centuries, presents the historical process of conversion to Islam in all its variety and unruly detail, through the eyes of both Muslim and non-Muslim observers.

A look at the developing conflicts in Christian-Muslim relations during late antiquity and the early Islamic era How did the medieval Middle East transform from a majority-Christian world to a majority-Muslim world, and what role did violence play in this process? Christian Martyrs under Islam explains how Christians across the early Islamic caliphate slowly converted to the faith of the Arab conquerors and how small groups of individuals rejected this faith through dramatic acts of resistance, including apostasy and blasphemy. Using previously untapped sources in a range of Middle Eastern languages, Christian Sahner introduces an unknown group of martyrs who were executed at the hands of Muslim officials between the seventh and ninth centuries CE. Found in places as diverse as Syria, Spain, Egypt, and Armenia, they include an alleged descendant of Muhammad who converted to Christianity, high-ranking Christian secretaries of the Muslim state who viciously insulted the Prophet, and the children of mixed marriages between Muslims and Christians. Sahner argues that Christians never experienced systematic persecution under the early caliphs, and indeed, they remained the largest portion of the population in the greater Middle East for centuries after the Arab conquest. Still, episodes of ferocious violence contributed to the spread of Islam within Christian societies, and memories of this bloodshed played a key role in shaping Christian identity in the new Islamic empire. Christian Martyrs under Islam examines how violence against Christians ended the age of porous religious boundaries and laid the foundations for more antagonistic Muslim-Christian relations in the centuries to come.

The Oxford Handbook of Religious Conversion offers a comprehensive exploration of the dynamics of religious conversion, which for centuries has profoundly shaped societies, cultures, and individuals throughout the world. Scholars from a wide array of religions and disciplines interpret both the varieties of conversion experiences and the processes that inform this personal and communal phenomenon. This volume examines the experiences of individuals and communities who change religions, those who experience an intensification of their religion of origin, and those who encounter new religions through colonial intrusion, missionary work, and charismatic and revitalization movements. The thirty-two innovative essays provide overviews of the history of particular religions, including Hinduism, Buddhism, Confucianism, Taoism, Sikhism, Islam, Christianity, Judaism, indigenous religions, and new religious movements. The essays also offer a wide range of disciplinary perspectives-psychological, sociological, anthropological, legal, political, feminist, and geographical-on methods and theories deployed in understanding conversion, and insight into various forms of deconversion.

The challenges of cultural and religious diversity that face European and American societies today are not a new phenomenon. People in the Middle Ages lived in pluralistic societies, and they found highly interesting ways of dealing with religious and cultural diversity. While religious and political authorities commanded people to stick to their kind, some people explored the borderland between religious identities. In medieval Iberia, Christians and Muslims challenged the legal authorities’ prohibitions against crossing religious and cultural boundaries when they engaged in mixed marriages between Muslims and Christians or converted from one religion to the other. By examining the topics of conversion and mixed marriages in legal texts of Muslim and Christian origin, Pluralism in the Middle Ages explores the construction of boundaries as well as the reasons explaining such constructions. It demonstrates that the religious and social boundaries were not static, nor were they similarly defined by Islamic and Christian medieval cultures. Moreover, the book argues that Muslims and Christians in medieval Iberia did not constitute clearly separated groups, since various categories of people haunted the boundaries between them: false converts employing taqiya strategy (taking on an outward Christian identity while practicing Islam in secret), those engaged in mixed marriages or interreligious sexual relations (and their children), and converts, whose conversion may be perceived as sincere or insincere, total or partial.

The present volume focuses on the political perceptions of the Hajj, its global religious appeal to Muslims, and the European struggle for influence and supremacy in the Muslim world in the age of pre-colonial and colonial empires. In the late fifteenth century and early sixteenth century, a pivotal change in seafaring occurred, through which western Europeans played important roles in politics, trade, and culture. Viewing this age of empires through the lens of the Hajj puts it into a different perspective, by focusing on how increasing European dominance of the globe in pre-colonial and colonial times was entangled with Muslim religious action, mobility, and agency. The study of Europe’s connections with the Hajj therefore tests the hypothesis that the concept of agency is not limited to isolated parts of the globe. By adopting the “tools of empires,” the Hajj, in itself a global activity, would become part of global and trans-cultural history. With contributions by: Aldo D’Agostini; Josep Lluís Mateo Dieste; Ulrike Freitag; Mahmood Kooria; Michael Christopher Low; Adam Mestyan; Umar Ryad; John Slight and Bogusław R. Zagórski.