174 Preface يا أَيُّهَا النّاسُ قَد جاءَكُم بُرهانٌ مِن رَبِّكُم وَأَنزَلنا إِلَيكُم نورًا مُبينًاYusuf AliO mankind! verily there hath come to you a convincing proof from your Lord: For We have sent unto you a light (that is) manifest.1The Proof and the Light are the Qur-ān and the Personality, life and teaching of Muḥammad Al Muṣṭafā.