The Messenger of Allah said: "There are things which are not befitting for the mosque: it should not be taken as a thoroughfare; weapons should not be unsheathed in it; bows should not be drawn nor arrows shot in it; no one should pass through it carrying raw meat; no prescribed punishment or retaliatory punishment should be carried out in it; and it should not be used as a marketplace."  

عَنْ رَسُولِ اللَّهِ ﷺ قَالَ خِصَالٌ لاَ تَنْبَغِي فِي الْمَسْجِدِ لاَ يُتَّخَذُ طَرِيقًا وَلاَ يُشْهَرُ فِيهِ سِلاَحٌ وَلاَ يُنْبَضُ فِيهِ بِقَوْسٍ وَلاَ يُنْشَرُ فِيهِ نَبْلٌ وَلاَ يُمَرُّ فِيهِ بِلَحْمٍ نِيءٍ وَلاَ يُضْرَبُ فِيهِ حَدٌّ وَلاَ يُقْتَصُّ فِيهِ مِنْ أَحَدٍ وَلاَ يُتَّخَذُ سُوقًا  

"The Messenger of Allah forbade buying and selling in the mosque, and reciting poetry in the mosque."  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الْبَيْعِ وَالاِبْتِيَاعِ وَعَنْ تَنَاشُدِ الأَشْعَارِ فِي الْمَسَاجِدِ  

The Prophet said: "Keep your infants, your insane and your evil ones away from your mosques. Avoid engaging in transactions and disputes, raising your voices, carrying out your prescribed punishments and unsheathing your swords therein. Make places for purification at their gates, and perfume them with incense on Fridays." (Maudu')  

أَنَّ النَّبِيَّ ﷺ قَالَ جَنِّبُوا مَسَاجِدَكُمْ صِبْيَانَكُمْ وَمَجَانِينَكُمْ وَشِرَارَكُمْ وَبَيْعَكُمْ وَخُصُومَاتِكُمْ وَرَفْعَ أَصْوَاتِكُمْ وَإِقَامَةَ حُدُودِكُمْ وَسَلَّ سُيُوفِكُمْ وَاتَّخِذُوا عَلَى أَبْوَابِهَا الْمَطَاهِرَ وَجَمِّرُوهَا فِي الْجُمَعِ