Surah 15. Al-Hijr, Ayah 89

The above interpolated phrase offers, to my mind, the only satisfactory explanation of the definite articles prefixed to the words an-nadhir al-mubin ("the plain warner"). This construction possibly alludes to the Biblical prediction of the advent of the Prophet Muhammad appearing in Deuteronomy xviii, {15} and {18}, which has been discussed by me in surah {2}, note [33].

In the ministry of Al-Mustafa there was no mincing of matters, no compromises with evil. Evil was denounced in unambiguous terms. Mubin implies both openness and clearness, i.e. freedom from ambiguity.