Surah An-Nahl Ayahs #105 Translated in English

And when We substitute a verse in place of a verse - and Allāh is most knowing of what He sends down - they say, "You, [O Muḥammad], are but an inventor [of lies]." But most of them do not know.

Say, [O Muḥammad], "The Pure Spirit [i.e., Gabriel] has brought it down from your Lord in truth to make firm those who believe and as guidance and good tidings to the Muslims."

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.

Indeed, those who do not believe in the verses of Allāh - Allāh will not guide them, and for them is a painful punishment.

They only invent falsehood who do not believe in the verses of Allāh, and it is those who are the liars.