«إِذَا رَأَيْتُمْ مَنْ يَبِيعُ أَوْ يَبْتَاعُ فِي الْمَسْجِدِ، فَقُولُوا: لَا أَرْبَحَ اللهُ تِجَارَتَكَ، وَإِذَا رَأَيْتُمْ مَنْ يَنْشُدُ ضَالَّةً فِي الْمَسْجِدِ فَقُولُوا: لَا رَدَّهَا اللهُ عَلَيْكَ»
(If you see someone buying or selling in the Masjid, say to him, â€May Allah never make your business profitable!'' And if you see someone calling out about lost property, say, â€May Allah never return it to you!'') This was recorded by At-Tirmidhi, who said: â€Hasan Gharib.'' Al-Bukhari recorded that As-Sa'ib bin Yazid Al-Kindi said, â€I was standing in the Masjid and a man threw pebbles at me, so I looked and saw `Umar bin Al-Khattab who said, `Go and bring me these two men.' I went and brought them to him, and he said, `Who are you' Or, `Where do you come from' They said, `We are from At-Ta'if.' `Umar said, `If you had been from this town I would have hit you, for you are raising your voices in the Masjid of the Messenger of Allah .''' An-Nasa'i recorded that Ibrahim bin `Abdur-Rahman bin `Awf said: â€`Umar heard the voice of a man in the Masjid and said: `Do you know where you are''' This is also Sahih. Al-Hafiz Abu Ya`la Al-Musili recorded from Ibn `Umar that `Umar used to burn incense in the Masjid of the Messenger of Allah every Friday. Its chain of narration is Hasan and there is nothing wrong with it, Allah knows best. It is confirmed in the Two Sahihs that the Messenger of Allah said: