Amr bin Shu'aib narrates from his father, and he from his grandfather (Sayyiduna Abdullah bin Amr bin al-As, may Allah be pleased with him) that the Messenger of Allah, peace and blessings be upon him, forbade buying and selling in the mosque, reciting poetry, announcing lost items, and forming circles to sit before the Friday prayer.

Sayyiduna Abdullah bin Amr (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) forbade buying and selling in the mosque.

It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: Whoever hears a man announcing a lost item in the mosque, let him say to him: May Allah not return it to you, for the mosques were not built for this purpose.

It is narrated from Sayyiduna Buraidah Aslami (may Allah be pleased with him) that a Bedouin announced in the mosque after Fajr: "Who has called the red camel?" The Messenger of Allah (peace and blessings be upon him) said: "You shall not find it, you shall not find it. These mosques are only for the purposes for which they have been built."

Sayyiduna Hakim bin Hizam (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: Neither should the legal punishments (hudood) be carried out in the mosques, nor should retribution (qisas) be taken. And in a non-marfu’ narration, there are these additional words: Nor should poetry be recited in them.

The mother of Akabar bin Ushaybah, Umm Uthman bint Sufyan, pledged allegiance to the Noble Prophet (peace and blessings be upon him). She narrates that the Prophet (peace and blessings be upon him) called for Shaybah, he opened the door, and the Prophet (peace and blessings be upon him) entered the House of Allah and then came back out. In this way, the Prophet (peace and blessings be upon him) finished, and Shaybah went back. But soon the messenger of the Messenger of Allah (peace and blessings be upon him) arrived again and said, "Listen to the words of the Messenger of Allah (peace and blessings be upon him)." So he reached the Prophet (peace and blessings be upon him), and the Prophet (peace and blessings be upon him) said: "I saw a horn in the House of Allah, hide it." Another narrator of this hadith says that the Noble Prophet (peace and blessings be upon him) also said to him that it is inappropriate for anything that distracts the worshippers to be in the House of Allah.

It is narrated through another chain: Safiyyah bint Shaybah says: A woman from Banu Sulaym, who is the mother of most of our household, told me that the Messenger of Allah, peace and blessings be upon him, sent a message to Uthman bin Talhah. On one occasion, the narrator said that this woman asked Uthman bin Talhah: Why did the Prophet, peace and blessings be upon him, call you? Uthman bin Talhah, may Allah be pleased with him, replied: The Prophet, peace and blessings be upon him, said to me: When I entered the House of Allah (the Ka'bah), I saw two ram's horns, then I forgot to order you to cover them, so now cover them, because it is not appropriate for anything to be in the House of Allah that distracts the worshipper. Sufyan says: The two ram's horns remained in the House of Allah, and when the House of Allah caught fire, they were also burned.

Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: The Day of Judgment will not be established until people begin to boast to one another about (the construction of) mosques.

Hazrami bin Lahiq narrates from an Ansari man that the Messenger of Allah, peace and blessings be upon him, said: When any of you feels a louse in his garment, he should press it and not throw it in the mosque.

Talha bin Ubaidullah bin Karz narrates from a Quraishi Sheikh of Makkah Mukarramah, who says that a man felt a louse in his garment and was about to throw it in the mosque, but the Messenger of Allah, peace and blessings be upon him, said to him: Do not do that; keep it in your garment until you leave the mosque.