A prayer in my mosque is a thousand times more excellent than a prayer in any other mosque, except Masjid al-Haram (Mosque of the Ka'ba). (Using translation from Muslim 1394a)
قَالَ رَسُولُ اللَّهِ ﷺ «صَلَاةٌ فِي مَسْجِدِي هَذَا أَفْضَلُ مِنْ أَلْفِ صَلَاةٍ فِيمَا سِوَاهُ إِلَّا الْمَسْجِدَ الْحَرَامَ»