Surah An-Nahl Verse 103 - English Translation by Edward Henry Palmer
Surah An-Nahlوَلَقَدۡ نَعۡلَمُ أَنَّهُمۡ يَقُولُونَ إِنَّمَا يُعَلِّمُهُۥ بَشَرٞۗ لِّسَانُ ٱلَّذِي يُلۡحِدُونَ إِلَيۡهِ أَعۡجَمِيّٞ وَهَٰذَا لِسَانٌ عَرَبِيّٞ مُّبِينٌ
We knew that they said, 'It is only some mortal who teaches him.' - The tongue of him they lean towards is barbarous, and this is plain Arabic