الفرقان — Al-Furqan Ayat 4
وَقَالَ الَّذِيْنَ كَفَرُوْٓا اِنْ هٰذَآ اِلَّآ اِفْكُ ِۨافْتَرٰىهُ وَاَعَانَهٗ عَلَيْهِ قَوْمٌ اٰخَرُوْنَۚ فَقَدْ جَاۤءُوْ ظُلْمًا وَّزُوْرًا ۚ
Wa qālal-lażīna kafarū in hāżā illā ifkuniftarāhu wa a‘ānahū ‘alaihi qaumun ākharūn(a), fa qad jā'ū ẓulmaw wa zūrā(n).
"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."