Surah Hud · سُوْرَةُ هُوْدٍ · Juz 12
Q 11:35
أَمْ يَقُولُونَ ٱفْتَرَىٰهُ ۖ قُلْ إِنِ ٱفْتَرَيْتُهُۥ فَعَلَىَّ إِجْرَامِى وَأَنَا۠ بَرِىٓءٌ مِّمَّا تُجْرِمُونَ
Translations
Or do they say [about Prophet Muhammad], "He invented it"? Say, "If I have invented it, then upon me is [the consequence of] my crime; but I am innocent of what [crimes] you commit."Ou bien ils disent: il l'a inventé? Dis: «Si je l'ai inventé, que mon crime retombe sur moi! Et je suis innocent de vos criminelles accusations».Tafsir
The disbelief of Noah’s people led them to claim that he had made up something about Allah with this faith that he brought to them. Allah told His messenger to say to them that if he had invented it, then he would be a wrongdoer and the punishment of his crime would fall upon him alone; and if they rejected the truth he brought them, out of stubbornness and pride, then they were the wrongdoers, and he was not responsible for their crime in any way, but was innocent of it.
Read Ibn Kathir (Ibn Kathir (abridged, English))
Or they (the pagans of Makkah) say: "He has fabricated it." Say: "If I have fabricated it, upon me be my crimes, but I am innocent of (all) those crimes which you commit (35)
An Interruption to verify the Truthfulness of the Prophet (ﷺ)
This is presented in the middle of the story to affirm the story itself. It is as if Allah, the Exalted, is saying to Muhammad , "Or do these obstinate disbelievers say that he fabricated this and invented it himself?"
قُلْ إِنِ افْتَرَيْتُهُ فَعَلَيَّ إِجْرَامِي
(Say: "If I have fabricated it, upon me be my crimes...") This means: such sin would be mine alone.
وَأَنَا بَرِيءٌ مِّمَّا تُجْرِمُونَ
(but I am innocent of (all) those crimes which you commit.) This story is not invented, or fabricated falsely. Because he (the Prophet) knows better the punishment of Allah for one who lies on Allah.
Arabic text: Tanzil (Uthmani). Translations: Sahih International (en), Muhammad Hamidullah (fr). tanzil.net