It wasnarrated that Anas bin Malik said:
"The Messenger of Allah(ﷺ)said: 'A man's prayer in his house is equal (in reward) to oneprayer; his prayer in the mosque of the tribes is equal totwenty-fiveprayers; his prayer in the mosque in which Friday prayeris offered isequal to five-hundred prayers; his prayer in AqsaMosque is equal tofifty thousand prayers; his prayer in my mosque isequal to fiftythousand prayers; and his prayer in the Sacred Mosqueis equal to onehundred thousand prayers."
English reference: Vol. 1, Book 5, Hadith 1413
Arabic reference: Book 5, Hadith 1478