Surah Al-A'raf — Ayah 204 (7:204)
وَإِذَا قُرِئَ ٱلۡقُرۡءَانُ فَٱسۡتَمِعُواْ لَهُۥ وَأَنصِتُواْ لَعَلَّكُمۡ تُرۡحَمُونَ ٢٠٤
English translation (Saheeh International)
So when the Qur’ān is recited, then listen to it and pay attention that you may receive mercy.
Brief commentary
When the Qur’ān is recited, listen to it being recited: do not talk, and do not busy yourself with something else, so that Allah may have mercy on you.