Sura al-Isrāʾ 17:47

نَّحْنُ أَعْلَمُ بِمَا يَسْتَمِعُونَ بِهِۦٓ إِذْ يَسْتَمِعُونَ إِلَيْكَ وَإِذْ هُمْ نَجْوَىٰٓ إِذْ يَقُولُ ٱلظَّٰلِمُونَ إِن تَتَّبِعُونَ إِلَّا رَجُلًا مَّسْحُورًا

nnaḥnu aʿlamu bi-mā yastamiʿūna bihi idh yastamiʿūna ilayka wa-idh hum najwa idh yaqūlu l-ẓālimūna in tattabiʿūna illā rajulan masḥūran

We know best why it is they listen, when they listen to thee; and when they meet in private conference, behold, the wicked say, "Ye follow none other than a man bewitched!"