In the Muslim brotherhoods of Senegal, marabouts are organized in elaborate hierarchies; the highest marabout of the Mourides, for example, has been elevated to the status of a Caliph or ruler of the faithful (Amir al-Mu'minin). Older, North African based traditions such as the Tijaniyyah and the Qadiriyyah base their structures on respect for teachers and religious leaders who, south of the Sahara, often are called marabouts. Those who devote themselves to prayer or study, either based in communities, religious centers, or wandering in the larger society, are named marabouts. In Senegal and Mali, these Marabouts rely on donations to live. Often there is a traditional bond to support a specific marabout that has accumulated over generations within a family. Marabouts normally dress in traditional West African robes and live a simple, ascetic life.