This multidisciplinary collective volume advances the scholarly discussion on the origins of Islam. It simultaneously focuses on three domains: texts, social contexts, and ideological developments relevant for the study of Islam's beginnings -- taking the latter expression in its broadest possible sense. The intersections of these domains need to be examined afresh in order to obtain a clear picture of the concurrent phenomena that collectively enabled both the gradual emergence of a new religious identity and the progressive delimitation of its initially fuzzy boundaries.