As long as a person says "There is no god but Allah Muhammad is His Messenger", you cannot exclude him from the guardianship system. You cannot say things such as "Begone; go away to the disbelievers." Saying so is unlawful. On one hand you are trying to win people over to the cause of Islam, but on the other hand, you are trying to expel people from it. If you are going to expel people, then why are you trying to win disbelievers over? - Harun Yahya