hadith
2714
۞
The Prophet (SAWA) was asked by Abu Dharr how to maintain the mosques, to which he replied, 'Voices should not be raised therein, nor engrossment in wrongdoing. There should be no buying or selling, and all vain talk must be shunned as long as you are inside. If you do not do this, then you will have no one to blame but yourself on the Day of Resurrection.
رسولُ اللهِ (صَلَّيَ اللهُ عَلَيهِ وَ آلِهِ) ـ وقد سَألَهُ أبو ذَرٍّ عن كَيفيّةِ عِمارَةِ المَساجِدِ ـ: لا تُرفَعُ فيها الأصواتُ ، ولا يُخاضُ فيها بالباطِلِ ، ولا يُشتَرى فيها ولا يُباعُ ، واترُكِ اللَّغوَ ما دُمتَ فيها ، فإن لَم تَفْعَل فلا تَلُومَنَّ يَومَ القِيامَةِ إلّا نَفسَكَ.