الر ۚ تِلْكَ آيَاتُ الْكِتَابِ وَقُرْآنٍ مُّبِينٍ (1)
(15:1) Alif Lam Ra. These are the verses of the Divine Book and the lucid Quran. *1
*1) This verse is the brief introduction to the Surah, and immediately after this begins its theme. "These are the verses of the lucid Qur'an": These are the verses of that Qur'an which makes its meaning lucid and understandable.