Language

An-Naḥl 16:103

وَلَقَدۡ نَعۡلَمُ أَنَّهُمۡ يَقُولُونَ إِنَّمَا يُعَلِّمُهُۥ بَشَرٞۗ لِّسَانُ ٱلَّذِي يُلۡحِدُونَ إِلَيۡهِ أَعۡجَمِيّٞ وَهَٰذَا لِسَانٌ عَرَبِيّٞ مُّبِينٌ ١٠٣

And We certainly know that they say, "It is only a human being who teaches the Prophet." The tongue of the one they refer to is foreign, and this Qur'an is [in] a clear Arabic language.

Ash-Shu‘arā’ 26:195

بِلِسَانٍ عَرَبِيّٖ مُّبِينٖ ١٩٥

In a clear Arabic language.

An-Naml 27:16

وَوَرِثَ سُلَيۡمَٰنُ دَاوُۥدَۖ وَقَالَ يَٰٓأَيُّهَا ٱلنَّاسُ عُلِّمۡنَا مَنطِقَ ٱلطَّيۡرِ وَأُوتِينَا مِن كُلِّ شَيۡءٍۖ إِنَّ هَٰذَا لَهُوَ ٱلۡفَضۡلُ ٱلۡمُبِينُ ١٦

And Solomon inherited David. He said, "O people, we have been taught the language of birds, and we have been given from all things. Indeed, this is evident bounty."

Ar-Rūm 30:22

وَمِنۡ ءَايَٰتِهِۦ خَلۡقُ ٱلسَّمَٰوَٰتِ وَٱلۡأَرۡضِ وَٱخۡتِلَٰفُ أَلۡسِنَتِكُمۡ وَأَلۡوَٰنِكُمۡۚ إِنَّ فِي ذَٰلِكَ لَأٓيَٰتٖ لِّلۡعَٰلِمِينَ ٢٢

And of His signs is the creation of the heavens and the earth and the diversity of your languages and your colors. Indeed in that are signs for those of knowledge.

Al-Aḥqāf 46:12

وَمِن قَبۡلِهِۦ كِتَٰبُ مُوسَىٰٓ إِمَامٗا وَرَحۡمَةٗۚ وَهَٰذَا كِتَٰبٞ مُّصَدِّقٞ لِّسَانًا عَرَبِيّٗا لِّيُنذِرَ ٱلَّذِينَ ظَلَمُواْ وَبُشۡرَىٰ لِلۡمُحۡسِنِينَ ١٢

And before it was the scripture of Moses to lead and as a mercy. And this is a confirming Book in an Arabic tongue to warn those who have wronged and as good tidings to the doers of good.

Ibrāhīm 14:4

وَمَآ أَرۡسَلۡنَا مِن رَّسُولٍ إِلَّا بِلِسَانِ قَوۡمِهِۦ لِيُبَيِّنَ لَهُمۡۖ فَيُضِلُّ ٱللَّهُ مَن يَشَآءُ وَيَهۡدِي مَن يَشَآءُۚ وَهُوَ ٱلۡعَزِيزُ ٱلۡحَكِيمُ ٤

And We did not send any messenger except [speaking] in the language of his people to state clearly for them, and Allah sends astray [thereby] whom He wills and guides whom He wills. And He is the Exalted in Might, the Wise.

Fuṣṣilat 41:44

وَلَوۡ جَعَلۡنَٰهُ قُرۡءَانًا أَعۡجَمِيّٗا لَّقَالُواْ لَوۡلَا فُصِّلَتۡ ءَايَٰتُهُۥٓۖ ءَا۬عۡجَمِيّٞ وَعَرَبِيّٞۗ قُلۡ هُوَ لِلَّذِينَ ءَامَنُواْ هُدٗى وَشِفَآءٞۚ وَٱلَّذِينَ لَا يُؤۡمِنُونَ فِيٓ ءَاذَانِهِمۡ وَقۡرٞ وَهُوَ عَلَيۡهِمۡ عَمًىۚ أُوْلَٰٓئِكَ يُنَادَوۡنَ مِن مَّكَانِۭ بَعِيدٖ ٤٤

And if We had made it a non-Arabic Qur'an, 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.