It is narrated from Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "One prayer in this mosque of mine is better than a thousand prayers in any other mosque besides it, except al-Masjid al-Haram."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1549