Surah At-Tur, Verse 12
ٱلَّذِينَ هُمْ فِى خَوْضٍۢ يَلْعَبُونَ
Translation — Sahih International
Who are in [empty] discourse amusing themselves.
Source
Kur'an-ı Kerim, Tûr Suresi 52:12
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/52-suresi-12-ayet