Aqeedah

Aqidah (sometimes spelled as Aqeeda, Aqida or Aqeedah) (Arabic: عقيدة) is an  Islamic term meaning creed. Any religious belief system, or creed, can be considered an examples of aqidah. However this term has taken a significant technical usage in Muslim history and theology, denoting those matters over which Muslims hold conviction. There are three main accepted schools of Aqidah: Ashari, Maturidi and Athari.
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Le terme `Aqida ou `Aqidah (arabe : ʿaqīda, , croyance) est un terme qui sert à décrire les fondements de la croyance religieuse dans l’islam sunnite. Il est synonyme de credo.
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Акыда — исламское мировоззрение, форма раскрытия имана. Если шахада объединяет всех мусульман, то акыда акцентирует различия между различными направлениями в исламе. Так для суннитов акыда заключается в пяти столпах ислама, а для шиитов в двенадцати имамах
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Creed, belief, formula or confession of religious belief.
The belief system that is based upon a firm conviction in all the fundamentals of faith and of the Oneness of Allah, i.e.
It is derived from the verb aqada meaning to firmly bind and knot. Whatsoever settles in the heart in a firm and definitive manner is said to be that person's aqeedah.
In the technical sense it refers to the definitive faith and certain ruling that is not open to any doubt. It is called aqeedah because the person binds his heart upon it.