West Africa and Sudan have various Sufi orders regarded skeptically by the more doctrinally strict branches of Islam in the Middle East. Most orders in West Africa emphasize the role of a spiritual guide, marabout or possessing supernatural power, regarded as an Africanization of Islam. In Senegal and Gambia, Mouridism Sufis claim to have several million adherents and have drawn criticism for their veneration of Mouridism's founder Amadou Bamba. The Tijani is the most popular Sufi order in West Africa, with a large following in Mauritania, Mali, Niger, Senegal and Gambia.