Surah Al-Qamar (The Moon), Verse 40

وَلَقَدْ یَسَّرْنَا الْقُرْاٰنَ لِلذِّكْرِ فَهَلْ مِنْ مُّدَّكِرٍ 

Wa laqad yassarnal Qur'aana liz zikri fahal min muddakir

“And We have indeed made the Qur'an easy to understand and remember: then is there any that will receive admonition?”

Quran 54:40 (Yusuf Ali Translation)