Duk da cewa imani a addinin Musulunci ya ƙunshi imani da Allah, da Mala'ikunsa, da Littattafansa, da Manzanninsa, da Ranar Alƙiyama, da al-Ƙadar, alheri da sharri daga wurin Allah, hakan ba yana nufin ware wani abu daga imani ba. Maimakon haka, yana nufin cewa waɗannan su ne tushen imani, kuma akwai wasu abubuwa da suka shafi 'aqīdah (akida), kamar rashin laifi (isma) na Annabawa, wanda shi ma yana cikin imani da Annabawa. Hujjar rashin laifin Annabawa hujja ce ta hankali, ba hujja ta nassi ba, domin tabbatar da annabcin wani Annabi da saƙon Manzon da aka aika masa, hujja ce ta hankali wadda mu'ujiza mai gani ta tabbatar.

Although the Islamic belief consists of belief in Allah , His Angels, His Books, His Messengers, the Day of Judgement and al-Qada wal-Qadar, both good and bad from Allah , it does not mean to exclude anything else from the belief. Rather, it means that this forms the basis of belief and there are other thoughts which relate to the ‘aqīdah (creed), such as the infallibility of the Prophets which also come under the belief in the prophets. The evidence of the infallibility of the Prophets is a rational evidence and not a textual evidence because the proof of the prophethood of a Prophet and the message of the messenger to whom he has been sent is rational, established by a perceptible miracle.