An-Nahl (16:103)
وَلَقَدۡ نَعۡلَمُ أَنَّهُمۡ یَقُولُونَ إِنَّمَا یُعَلِّمُهُۥ بَشَرࣱۗ لِّسَانُ ٱلَّذِی یُلۡحِدُونَ إِلَیۡهِ أَعۡجَمِیࣱّ وَهَـٰذَا لِسَانٌ عَرَبِیࣱّ مُّبِینٌ
And We know well that they say: Only a man teacheth him. The speech of him at whom they falsely hint is outlandish, and this is clear Arabic speech.
— Mohammed Marmaduke William Pickthall
Wa laqad na'lamu annahum yaqooloona innamaa yu'allimuhoo bashar; lisaanul lazee yulhidoona ilaihi a'ja miyyunw wa haaza lisaanun 'Arabiyyum mubeen