Chapter 8: The Book of the Masjids
It was narrated from Ibn 'Abbas that Maimunah the wife of the Prophet (ﷺ) said: "Whoever prays in the Masjid of the Messenger of Allah (ﷺ) (that is good), for I heard the Messenger of Allah (ﷺ) say: 'One prayer offered there is better than a thousand prayers offered elsewhere, except the Masjid of the Ka' bah.'"
Sunan an-Nasa'i 691