وَعَنِ اِبْنِ اَلزُّبَيْرِ رَضِيَ اَللَّهُ عَنْهُمَا
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«صَلَاةٌ فِي مَسْجِدِي هَذَا أَفْضَلُ مِنْ أَلْفِ صَلَاةٍ فِيمَا سِوَاهُ إِلَّا اَلْمَسْجِدَ اَلْحَرَامَ، وَصَلَاةٌ فِي اَلْمَسْجِدِ اَلْحَرَامِ أَفْضَلُ مِنْ صَلَاةٍ فِي مَسْجِدِي بِمِائَةِ صَلَاةٍ»
“Offering prayer in my mosque (in Madinah) is better than one thousand prayers elsewhere, save for those offered prayer in al-Masjid al-Haram (in Makkah). And prayer offered in al-Masjid al-Haram is better than prayer offered in my mosque by one hundred prayers.” Related by Ahmad and Ibn Hibban graded it as Sahih.
Bulugh al-Maram 886, Book 6, Hajj, Hadith 71. 1 min read