Fussilat 41:44

Walaw jaAAalnahu qur-ananaAAjamiyyan laqaloo lawla fussilat ayatuhuaaAAjamiyyun waAAarabiyyun qul huwa lillatheena amanoohudan washifaon wallatheena layu/minoona fee athanihim waqrun wahuwa AAalayhim AAaman ola-ikayunadawna min makanin baAAeed

And if We had made it a foreign [i.e., non-Arabic] Qur’ān, they would have said, "Why are its verses not explained in detail [in our language]? Is it a foreign [recitation] and an Arab [messenger]?" Say, "It is, for those who believe, a guidance and cure." And those who do not believe - in their ears is deafness, and it is upon them blindness. Those are being called from a distant place.

Had We made it a non-Arabic Qur’ān, they would have said, “Why are its verses not clearly explained? Is it a non-Arabic (book) and an Arab (messenger)?” Say, “For those who believe, it is guidance and cure. As for those who do not believe, there is deafness in their ears, and for them it is blindness. Such people are being called from a distant place.”