Yusuf, 2 Ayah
12:2
إِنَّآ أَنزَلۡنَٰهُ قُرۡءَٰنًا عَرَبِيّٗا لَّعَلَّكُمۡ تَعۡقِلُونَ ٢
'Innā 'Anzalnāhu Qur'ānāan `Arabīyāan La`allakum Ta`qilūna
Indeed, We have sent it down as an Arabic Qur'an that you might understand.