Sunan Ibn Majah, Volume 2, Book 5, Hadith 1405 (DarusSalam) ⓘ
It was narrated from Ibn ‘Umar that the Prophet said: “One prayer in this mosque of mine is better than one thousand prayers in any other mosque except the Sacred Mosque.”
حَدَّثَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ نُمَيْرٍ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ ـ صلى الله عليه وسلم ـ قَالَ " صَلاَةٌ فِي مَسْجِدِي هَذَا أَفْضَلُ مِنْ أَلْفِ صَلاَةٍ فِيمَا سِوَاهُ مِنَ الْمَسَاجِدِ إِلاَّ الْمَسْجِدَ الْحَرَامَ " .
also referenced under: Hadith 1405 (Reference) & Book 5, Hadith 1470 (In-Book)