Chapter 41 - Surah Fussilat
44. And if We had sent this as a Qur'an in a foreign language other than Arabic, they would have said: "Why are not its Verses explained in detail (in our language)? What! (A Book) not in Arabic and (the Messenger) an Arab?" Say: "It is for those who believe, a guide and a healing. And as for those who disbelieve, there is heaviness (deafness) in their ears, and it (the Qur'an) is blindness for them. They are those who are called from a place far away (so they neither listen nor understand).