Alif lām rā’: God knows best what He means by these [letters]. Those — these verses — are the verses of the Book, the Qur’ān (āyātu’l-kitābi: this annexation functions in the sense of min, ‘from’) and of a manifest Qur’ān, one that makes evident what is truth and what is falsehood (wa-qur’ānin mubīnin is [made up of] a supplement with an added adjectival qualification).