Ingawa imani ya Kiislamu inajumuisha imani kwa Allah, Malaika Wake, Vitabu Vyake, Mitume Wake, Siku ya Kiyama, na al-Qada wal-Qadar, yaani mema na mabaya yote yanatoka kwa Allah, hilo halimaanishi kwamba kuna kitu kingine kinachotolewa nje ya imani. Badala yake, maana yake ni kwamba haya ndiyo msingi wa imani, na kuna mambo mengine yanayohusiana na ‘aqīdah (itikadi), kama vile kutokuwa na makosa kwa Mitume, ambayo pia huingia chini ya imani kwa Mitume. Ushahidi wa kutokuwa na makosa kwa Mitume ni ushahidi wa kiakili, wala si ushahidi wa kimaandiko, kwa sababu uthibitisho wa unabii wa Nabii na ujumbe wa Mtume aliyetumwa kwa watu wake ni wa kiakili, umethibitishwa kwa muujiza unaoonekana.

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.