INTRODUCTION: KNOWLEDGE IN PRACTICE

Context, as pointed out above, is not merely location: rather it comprises material and technological artefacts; geography and architectural environment; and the myriad of social relations and activities that animate 'place'.\n Both emphasize affiliation to the Layenne brotherhood and their associations with male authorities, and stress their purity for using the Qur'an by denying menstruation. We wish to acknowledge the Zentrum Moderner Orient (ZMO) in Berlin for assistance in preparing the manuscripts; the University of St Andrews and the German Science Foundation (DFG) for granting research leave and funding to Kai Kresse during the period of writing and revision at the ZMO; and Britain's Economic and Social Research Council (ESRC) for supporting the final stages of Marchand's writing and role in the publication (Res-000-27-0159). [...] we thank Joy Adapon for her reliable editing skills, and Liese Hoffmann and Katharina Zoeller at ZMO for their help in the final editorial stages.