Hazrat Abdullah bin Mughaffal says that the command of Allah Almighty { وَإِذَا قُرِیئَ الْقُرْآنُ فَاسْتَمِعُوا لَہُ وَأَنْصِتُوا } (When the Qur'an is recited, listen to it attentively and remain silent) pertains to the obligatory prayer.