Surah Al-Qalam 68:51

وَإِن يَكَادُ ٱلَّذِينَ كَفَرُوا۟ لَيُزْلِقُونَكَ بِأَبْصَـٰرِهِمْ لَمَّا سَمِعُوا۟ ٱلذِّكْرَ وَيَقُولُونَ إِنَّهُۥ لَمَجْنُونٌ

And indeed, those who disbelieve would almost make you slip with their eyes [i.e., looks] when they hear the message, and they say, "Indeed, he is mad."

Translation: Saheeh International

Tafsir

Indeed those who disbelieve would almost throw you down to the ground read la-yuzliqūnaka or la-yazliqūnaka with their looks looking at you in a severe way almost hurling you to the ground or making you fall from your place when they hear the Reminder the Qur’ān and they say out of envy ‘He is truly a madman!’ on …

Excerpt from Tafsir al-Jalalayn, commentary on 68:51, via Quran.com. The reader has the full commentary and 9 more tafsirs.