Surah Al-Qalam 68:6

بِأَييِّكُمُ ٱلْمَفْتُونُ

Which of you is the afflicted [by a devil].

Translation: Saheeh International

Tafsir

which of you is demented al-maftūn is a verbal noun similar in expressional form to al-ma‘qūl ‘intelligible’; al-futūn meaning al-junūn ‘insanity’ in other words is it this insanity in you or in them?

Excerpt from Tafsir al-Jalalayn, commentary on 68:6, via Quran.com. The reader has the full commentary and 9 more tafsirs.