Abstract
Mu’tazila is one of the theologian schools of thought of the Muslims. They got originated in the eighth century Hijri when a student Wasil bin Ata made differences on some Islamic issues with his teacher Al-Hassan Al-Basri. The differentiating point between the two was; what will be the position of a person after committing a major sin? He/She will be Muslim or not? Wasil bin Ata was of the view that such a person will be in an intermediate position (Neither Muslim nor non-Muslim) and he called him (Al-Manzil Bayn Al-Manzilatain). This was a new idea and terminology presented by Wasil bin Ata for the first time. The Mutazila was once a strong and powerful sect in the Islamic state of Abbasyd regime. It affected the thoughts and lives of many Muslims. Later on the Mutazilas based their thoughts on logic and propagated them. They established Five Principles and always propagated them. This article discusses the position of Mutazilas, their Five Principles and the differences with the basic Islamic believes and their effects on Muslim society and the arguments of other theologian schools of thoughts (especially Asha'aira and Maturidiyya) will also be discussed.