Surat Al-'An`ām - سورة الأنعام

قَدْ نَعْلَمُ إِنَّهُ لَيَحْزُنُكَ الَّذِي يَقُولُونَ ۖ فَإِنَّهُمْ لَا يُكَذِّبُونَكَ وَلَٰكِنَّ الظَّالِمِينَ بِآيَاتِ اللَّهِ يَجْحَدُونَ

Muhsin Khan: We know indeed the grief which their words cause you (O Muhammad SAW): it is not you that they deny, but it is the Verses (the Quran) of Allah that the Zalimun (polytheists and wrong-doers) deny.