QURAN

بِسْمِ اللَّهِ الرَّحْمَـٰنِ الرَّحِيمِ

وَإِذَا قُرِىءَ الْقُرْءَانُ فَاسْتَمِعُواْ لَهُ وَأَنصِتُواْ لَعَلَّكُمْ تُرْحَمُونَ

So, when the Qur'an is recited, listen to it, and be silent that you may receive mercy

A'raaf : 204