Surah Ash-Shu'ara — Ayah 193

وَإِنَّ رَبَّكَ لَهُوَ ٱلْعَزِيزُ ٱلرَّحِيمُ

And indeed, your Lord - He is the Exalted in Might, the Merciful.

وَإِنَّهُۥ لَتَنزِيلُ رَبِّ ٱلْعَـٰلَمِينَ

And indeed, the Qur'an is the revelation of the Lord of the worlds.

عَلَىٰ قَلْبِكَ لِتَكُونَ مِنَ ٱلْمُنذِرِينَ

Upon your heart, [O Muhammad] - that you may be of the warners -

بِلِسَانٍ عَرَبِىٍّ مُّبِينٍ

In a clear Arabic language.