The Qur'an as Proof

وَقَالَ ٱلَّذِينَ كَفَرُوٓا۟ إِنْ هَـٰذَآ إِلَّآ إِفْكٌ ٱفْتَرَىٰهُ وَأَعَانَهُۥ عَلَيْهِ قَوْمٌ ءَاخَرُونَ ۖ فَقَدْ جَآءُو ظُلْمًا وَزُورًا

And those who disbelieve say, "This [Qur’ān] is not except a falsehood he invented, and another people assisted him in it." But they have committed an injustice and a lie.

أَوَلَمْ يَكْفِهِمْ أَنَّآ أَنزَلْنَا عَلَيْكَ ٱلْكِتَـٰبَ يُتْلَىٰ عَلَيْهِمْ ۚ إِنَّ فِى ذَٰلِكَ لَرَحْمَةً وَذِكْرَىٰ لِقَوْمٍ يُؤْمِنُونَ

And is it not sufficient for them that We revealed to you the Book [i.e., the Qur’ān] which is recited to them? Indeed in that is a mercy and reminder for a people who believe.

أَكُفَّارُكُمْ خَيْرٌ مِّنْ أُو۟لَـٰٓئِكُمْ أَمْ لَكُم بَرَآءَةٌ فِى ٱلزُّبُرِ

Are your disbelievers better than those [former ones], or have you immunity in the scriptures?