In all parts of the globe where it has taken root, Islam has developed its local forms. This is not only due to the retention of pre-Islamic local practices, which may gradually be purged by reform movements. Different regions may have their distinctive practices, e.g. Sufi ways, the various Islamic institutions may play different roles, education and adjudication may be organised differently, interaction between the ulama and the state proceeds according to different patterns. Even within “scripturalist” Islam, there is an undeniable regional variation — notwithstanding the claims of certain Western scholars as well as Muslim fundamentalists. The Muslim communities of Western Europe constitute — with the exception of a relative...