This article sheds light on the informal institutional settings that guide the social and economic lives of Muslim migrants in Moscow. Mosques and medresses (Muslim theological schools) serve as central locations from which these institutions emanate, evolve, and transform. Case studies of trade networks and Hijama (wet cupping) healing practices demonstrate the inner workings of such institutions. The article draws on the theoretical traditions of informal institutions and new institutionalists focusing on anthropological works on agency and institutions. These analytical frameworks and concepts help explain the mechanisms and processes involved in the institutionalization of Muslim lives in Moscow. I argue that individual agency and charismatic leadership of individual members of the community play formative roles in institutionalizing daily practices and constituting normative orders of Muslims in Moscow. The article is based on fieldwork conducted in Moscow and Perm during 2016, 2017, and 2019.
