وَلَقَدْ And certainly نَعْلَمُ We know أَنَّهُمْ that they يَقُولُونَ say إِنَّمَا Only يُعَلِّمُهُۥ teaches him بَشَرٌۭ ۗ a human being لِّسَانُ (The) tongue ٱلَّذِى (of) the one يُلْحِدُونَ they refer إِلَيْهِ to him أَعْجَمِىٌّۭ (is) foreign وَهَـٰذَا while this لِسَانٌ (is) a language عَرَبِىٌّۭ Arabic مُّبِينٌ clear ١٠٣
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, and this [recitation, i.e., Qur’ān] is [in] a clear Arabic language.
— Come To Light