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

“We are fully aware of what they are listening for when they listen to thee: for when they are secluded among themselves, lo! these wrongdoers say [unto one another], "If you were to follow [Muhammad, you would follow] only a man bewitched!"”

Please check ayah 17:48 for complete tafsir.