Chapter 56: The Book ofZuhdand Softening of Hearts
Mahmud b. Labid reported that 'Uthman b. 'Affan decided to rebuild the mosque (of Allah' s Apostle in Medina) but the people did not like this idea and they wished that it should be preserved in the same (old) form. Thereupon he (Hadrat 'Uthman) said: I heard Allah' s Messenger (ﷺ) as saying: He who builds a mosque for Allah, Allah would build for him (a house) in Paradise like it.
Sahih Muslim 533d