Mosque etiquettes
Muslims should beware of doing anything that may offend or disturb those who come to the mosque for worship. This includes disturbing those who are reading Quraan, praying or remembering Allaah in the mosque. It is an evil deed (sayiah) to disturb the people in the mosque by talking about worldly affairs, because this is offensive to them and distracts Muslims from doing acts of worship properly. Disturbing others is not allowed, even if it takes the form of reading Quraan. islamqa.net