Modern Standard Arabic (The generalized approximation of what college-educated people speak nowadays) is fairly different from Koranic Arabic, but it'd still pr

Modern Standard Arabic (The generalized approximation of what college-educated people speak nowadays) is fairly different from Koranic Arabic, but it'd still probably be at least somewhat mutually intelligible, so you could pass as being from some other part of the Arab world I suppose. Spain would've probably been the best possible place to land during the Ummayad/Abbasid Caliphates (before about 1085 or so), but it was a very rough place afterward (the Almoravid/Almohad Caliphates were not known for tolerance, and the reconquest was even worse)