وَلَقَدْ نَعْلَمُ أَنَّهُمْ يَقُولُونَ إِنَّمَا يُعَلِّمُهُۥ بَشَرٌ لِّسَانُ ٱلَّذِى يُلْحِدُونَ إِلَيْهِ أَعْجَمِىٌّ وَهَٰذَا لِسَانٌ عَرَبِىٌّ مُّبِينٌ
Saheeh International(103) And We certainly know that they say, "It is only a human being who teaches him [i.e., the Prophet (ﷺ)]." The tongue of the one they refer to is foreign,[715] and this [recitation, i.e., Qur’ān] is [in] a clear Arabic language.
English Translation - Rowwad Translation CenterWe surely know that they say, “It is only a human being who teaches him[67].” But the language they refer to is foreign, whereas this is eloquent Arabic language.
English Translation - Hilali and Khan103. And indeed We know that they (polytheists and pagans) say: "It is only a human being who teaches him (Muhammad صلى الله عليه و سلم)." The tongue of the man they refer to is foreign, while this (the Qur’ân) is a clear Arabic tongue.