Surah An-Nahl Verse 103 - English Translation by Muhammad Mahmoud Ghali
Surah An-Nahlوَلَقَدۡ نَعۡلَمُ أَنَّهُمۡ يَقُولُونَ إِنَّمَا يُعَلِّمُهُۥ بَشَرٞۗ لِّسَانُ ٱلَّذِي يُلۡحِدُونَ إِلَيۡهِ أَعۡجَمِيّٞ وَهَٰذَا لِسَانٌ عَرَبِيّٞ مُّبِينٌ
And indeed We already know that they say, "Surely only a mortal is teaching him." The tongue (i.e., the language) of him about whom they blaspheme is foreign, and this is an evident Arabic tongue