﴿ وَقَالَ ٱلَّذِينَ كَفَرُوٓا۟ إِنْ هَٰذَآ إِلَّآ إِفْكٌ ٱفْتَرَىٰهُ وَأَعَانَهُۥ عَلَيْهِ قَوْمٌ ءَاخَرُونَ ۖ فَقَدْ جَآءُو ظُلْمًۭا وَزُورًۭا ﴾

“Moreover, those who are bent on denying the truth are wont to say, “This [Qur’an] is nothing but a lie, which he [himself] has devised with the help of other people, who thereupon have perverted the truth and brought a falsehood into being.””

(Those who disbelieve) the disbelievers of Mecca (say: This) Qur'an (is naught but a lie that he hath invented) that Muhammad (pbuh) has invented, (and other folk) Jabr, Yasar and Fukayhah al-Rumi (have helped him with it) to invent it, (so that they have produced a slander and a lie.