Exorcism in Christianity
Exorcism in Christianity is the practice of casting out demons from a person they are believed to have possessed. The person performing the exorcism, known as an exorcist, is often a member of the Christian Church, or an individual thought to be graced with special powers or skills. The exorcist may use prayers and religious material, such as set formulas, gestures, symbols, icons, amulets, etc. The exorcist often invokes God, Jesus and/or several different angels and archangels to intervene with the exorcism. A survey of Christian exorcists found that most exorcists believe that any mature Christian can perform an exorcism, not just members of clergy. Christian exorcists most commonly believe the authority given to them by the Father, Son, and Holy Spirit (the Trinity) is the source of their ability to cast out demons.
Witchcraft
It is a common belief that jinn can possess a human, thus requiring exorcism ("ruqya") derived from the Prophet's "sunnah" to cast off the jinn or devils from the body of the possessed. The practice of seeking help from the jinn is prohibited and can lead to possession. The "ruqya" contains verses of the Qur'an as well as prayers specifically targeted against demons. The knowledge of which verses of the Qur'an to use in what way is what is considered "magic knowledge."