Surah At-Tur (The Mount Tur), Verse 12

الَّذِیْنَ هُمْ فِیْ خَوْضٍ یَّلْعَبُوْنَ ۟

Allazeena hum fee khawdiny yal'aboon

“That play (and paddle) in shallow trifles.”

Quran 52:12 (Yusuf Ali Translation)