Surah An-Nahl Verse 103 - English Translation by Mohammad Shafi
Surah An-Nahlوَلَقَدۡ نَعۡلَمُ أَنَّهُمۡ يَقُولُونَ إِنَّمَا يُعَلِّمُهُۥ بَشَرٞۗ لِّسَانُ ٱلَّذِي يُلۡحِدُونَ إِلَيۡهِ أَعۡجَمِيّٞ وَهَٰذَا لِسَانٌ عَرَبِيّٞ مُّبِينٌ
And We are certainly aware that they say, "A certain man it is who teaches him." The person they are alluding to speaks a foreign tongue, and this is clear Arabic tongue