AL FURQAAN — Ayat 4
وَقَالَ الَّذِينَ كَفَرُوا إِنْ هَذَا إِلَّا إِفْكٌ افْتَرَاهُ وَأَعَانَهُ عَلَيْهِ قَوْمٌ آخَرُونَ فَقَدْ جَاؤُوا ظُلْمًا وَزُورًا
And those who disbelieve say, "This [Qur'an] is not except a falsehood he invented, and another people assisted him in it." But they have committed an injustice and a lie.
Tafsir Ibnu Katsir
وَقَالَ الَّذِينَ كَفَرُواْ إِنْ هَـذَا إِلاَّ إِفْكٌ افْتَرَاهُ وَأَعَانَهُ عَلَيْهِ قَوْمٌ ءَاخَرُونَ فَقَدْ جَآءُوا ظُلْماً وَزُوراً - وَقَالُواْ أَسَـطِيرُ الاٌّوَّلِينَ اكْتَتَبَهَا فَهِىَ تُمْلَى عَلَيْهِ بُكْرَةً وَأَصِيلاً - قُلْ أَنزَلَهُ الَّذِى يَعْلَمُ السِّرَّ فِى السَّمَـوَتِ وَالاٌّرْضِ إِنَّهُ كَانَ غَفُوراً رَّحِيماً
4. Those who disbelieve say: â€This is nothing but a lie that he has invented, and others have helped him in it.'' In fact, they have produced an unjust wrong and a lie. 5. And they say: â€Tales of the ancients which he has written down, and they are dictated to him morning and afternoon. '' 6. Say: â€It has been sent down by Him Who knows the secret of the heavens and the earth. Truly, He is Oft-Forgiving, Most Merciful.''  Allah tells us about the foolishness of the disbelievers' ignorant minds, when they said about the Qur'an: