وَلَوْ جَعَلْنَاهُ قُرْآنًا أَعْجَمِيًّا لَّقَالُوا لَوْلَا فُصِّلَتْ آيَاتُهُ أَأَعْجَمِيٌّ وَعَرَبِيٌّ قُلْ هُوَ لِلَّذِينَ آمَنُوا هُدًى وَشِفَاء وَالَّذِينَ لَا يُؤْمِنُونَ فِي آذَانِهِمْ وَقْرٌ وَهُوَ عَلَيْهِمْ عَمًى أُوْلَئِكَ يُنَادَوْنَ مِن مَّكَانٍ بَعِيدٍ
﴿٤٤﴾
سورة فصّلت
(41/44) And if We had made it (the Book) in a foreign language, they would certainly have said: “Should not its verses be explained”! A foreign language for an Arab? Say: “It is Hidayet and a Healing to those who believe (who are âmenû, who wish to reach Allah while they are alive), and there is heaviness in the ears of those who do not believe. It (the Qur'ân) is a blindness for them (not a Hidayet or Healing). They are called from a place far away.
Surah Fussilat