Quran 41:3 from Surah Fussilat on Divine Marvels.
كِتَٰبٞ فُصِّلَتۡ ءَايَٰتُهُۥ قُرۡءَانًا عَرَبِيّٗا لِّقَوۡمٖ يَعۡلَمُونَ
English translation: A Book are detailed its Verses a Quran (in) Arabic for a people who know
Transliteration: kitabun fussilat ayatuhu qur'anan arabiyyan liqawmin ya'lamuna