The Ruling on Making an Exception in Faith

Question:
Is it permissible for a believer to say, "I am a believer, if Allah wills"? We ask for clarification on this.

Answer:
Yes, it is permissible according to the people of the Sunnah and the community to say, "I am a believer, if Allah wills." The intention is not doubt, but rather "if Allah wills" because one does not know whether he has completed his faith or not. Faith has obligatory duties and matters related to avoiding what is forbidden. So he says, "if Allah wills," meaning: if Allah wills, my faith will be complete and perfect, or with regard to the final outcome; because he does not know how he will be concluded. So he says, "if Allah wills," because he does not know what the final outcome will be.
The Murji'ah deny this and say it is for doubt, and this is an error. The people of the Sunnah and the community make an exception in faith without doubt, but rather with regard to completing the obligatory duties of faith, and with regard to the final outcome.