"The Messenger of Allah said: 'The Hour will not begin until the people compete in (building) mosques.'"
Sunan Ibn Majah Book 4, Hadith 5
← Previous Hadith 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."

Sunan Ibn Majah Book 4, Hadith 4 Next Hadith → 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."

Sunan Ibn Majah Book 4, Hadith 6