Sunan Ibn Majah

"I heard the Messenger of Allah say: 'Whoever builds a mosque in which the Name of Allah is mentioned, Allah will build a house for him in Paradise.'"

"I heard the Messenger of Allah say: 'Whoever builds a mosque for the sake of Allah, Allah will build something similar for him in Paradise.'"

"The Messenger of Allah said: 'Whoever builds a mosque for the sake of Allah (from his own wealth), Allah will build a house for him in Paradise.'"

The Messenger of Allah said: "Whoever builds a mosque for the sake of Allah, like a sparrow's nest for Allah or even smaller, Allah will build for him a house in Paradise."

"The Messenger of Allah said: 'The Hour will not begin until the people compete in (building) mosques.'"

The Messenger of Allah said: "I see you building your mosque high after I am gone, just as the Jews built their synagogues high and the Christians built their churches high."

The Messenger of Allah said: "No people's deeds ever became evil deeds but they started to adorn their places of worship."

"The location where the Prophet's Mosque was built belonged to Banu Najjar. In it there were date-palm trees and graves of the idolaters. The Prophet said to them: 'Name its price.' They said: 'We will never take any money for it.' The Prophet built it and they were assisting him, and the Prophet was saying: 'The real life is the life of the Hereafter so forgive the Ansar and the Muhajirah.' Before the mosque was built, the Prophet would perform prayer wherever he was when the time for prayer came."

The Messenger of Allah commanded him to build the mosque of Ta'if in the place where the Taghuts used to be.

He said: "If it has been watered several times, then perform prayer there," and he attributed that to the Prophet.

"The Messenger of Allah said: 'All the earth is a mosque, except for graveyards and Hammam.'"

"Allah's Messenger prohibited prayer from being performed in seven places: The garbage dump, the slaughtering area, the graveyard, the commonly used road, the bathroom, in the area that camels rest at, and above the Ka'bah."

The Messenger of Allah said: "There are seven places where it is not permissible to perform the prayer: The top of the House of Allah; graveyards; garbage dumps; slaughterhouses; bathrooms; the area that camels rest, and the main road."

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."

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

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')

"We used to sleep in the mosque at the time of the Messenger of Allah."

"The Messenger of Allah said to us: 'Come with me.' So we went to the house of 'Aishah, where we ate and drank. Then the Messenger of Allah said to us: 'If you want, you can sleep here, or if you want you can go out to the mosque.' We said: 'We will go out to the mosque.'"

"I said: 'O Messenger of Allah! Which mosque was built first?' He said: 'Al-Masjid Al-Haram (in Makkah).' I said: 'Then which?' He said: 'then Al-Masjid Al-Aqsa (in Jerusalem).' I said: 'How many years between them?' He said: 'Forty years, but the whole earth is a mosque for you, so pray wherever you are when the time for prayer comes.'"

'Itban bin Malik As-Salimi who was the chief of his people Banu Salim and had participated in (the battle of) Badr with the Messenger of Allah said: "I came to the Messenger of Allah and said: 'O Messenger of Allah, my sight is failing and the flood comes and prevents me from reaching the mosque of my people, and it is too hard for me to cross the water. Do you think you could come and perform prayer in my house in a place which I can then take as a place of prayer?' He said: 'I will do that.' The following day, the Messenger of Allah and Abu Bakr came, when the heat of the day had grown intense. He asked permission to enter, and I gave him permission. He did not sit down until he said: 'Where would you like me to perform prayer for you in your house?' I showed him the place where I wanted him to pray, so the Messenger of Allah stood and we lined up behind him, and he led us in praying two Rak'ah (units). Then I asked him to stay and eat some Khazirah that had been prepared for them.'"