Quran 39:28 from Surah Az-Zumar on Divine Marvels.
قُرۡءَانًا عَرَبِيًّا غَيۡرَ ذِي عِوَجٖ لَّعَلَّهُمۡ يَتَّقُونَ
English translation: A Quran (in) Arabic without any crookedness that they may become righteous
Transliteration: qur'anan arabiyyan ghayra dhi iwajin la'allahum yattaquna