Sahih Muslim 3375
صحيح مسلم#3375SahihAbu Huraira (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:Prayer in my mosque is more excellent than a thousand prayers observed in other mosques except the Masjid al- Haram
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 15:579