Sufism is a mystical Islamic movement whose beliefs and practices differ in significant ways from mainstream Islam. Followers of Sufism are highly devoted to their spiritual guides (sheikhs) and strive for closeness to God through mystical practices like chanting, dancing, and music. However, some Sufi teachings and beliefs contradict core Islamic doctrines like tawheed (God's oneness) and risk associating partners with God. Mainstream Muslims see Sufism's deviations from Islam's clear theological foundations and Prophet Muhammad's teachings as problematic.