Ama-muslimu abophekile ukuba akholelwe ezincwadini zasezulwini ezidlule ngokujwayelekile nangokuqondile, njengoba zembulwa ngu-Allah kubaphrofethi baKhe, njengeTorah, iVangeli, amaHubo, kanye neMiqulu ka-Ibrahim. Izincwadi ezedlule zachezuka, kuyilapho i-Kur'an ilokhu igcinwe isivikelo sikaAllah.