Al-Mukhtasar
وَإِذَا قُرِئَ ٱلْقُرْءَانُ فَٱسْتَمِعُوا۟ لَهُۥ وَأَنصِتُوا۟ لَعَلَّكُمْ تُرْحَمُونَ ﴿٢٠٤﴾
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.