52:33
أَمْ يَقُولُونَ تَقَوَّلَهُۥ ۚ بَل لَّا يُؤْمِنُونَ
am yaqūlūna taqawwalahu bal lā yu'minūna
If they say, ‘He has made it up himself’- they certainly do not believe-
Or do they say: "He (Muhammad صلى الله عليه وسلم) has forged it (this Qur’ân)?" Nay! They believe not!