Sura 7 Al-A'raf (The Heights), aya 204

1. وَإِذَا قُرِئَ الْقُرْآنُ فَاسْتَمِعُوا لَهُ وَأَنْصِتُوا لَعَلَّكُمْ تُرْحَمُونَ

   So when the Qur'an is recited, then listen to it and pay attention that you may receive mercy.

   7:204

Tafsiri: Saheeh International