Sunan an-Nasa'i, Volume 1, Book 8, Hadith 700 (DarusSalam) ⓘ
Abu Umamah bin Sahl bin Hunaif said: "My father said: 'The Messenger of Allah said: 'Whoever goes out to his Masjid - the Masjid of Quba' and prays therein, that will be equivalent to 'Umrah.'"
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا مُجَمِّعُ بْنُ يَعْقُوبَ، عَنْ مُحَمَّدِ بْنِ سُلَيْمَانَ الْكِرْمَانِيِّ، قَالَ سَمِعْتُ أَبَا أُمَامَةَ بْنَ سَهْلِ بْنِ حُنَيْفٍ، قَالَ قَالَ أَبِي قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ خَرَجَ حَتَّى يَأْتِيَ هَذَا الْمَسْجِدَ مَسْجِدَ قُبَاءٍ فَصَلَّى فِيهِ كَانَ لَهُ عِدْلَ عُمْرَةٍ " .
also referenced under: Hadith 699 (Reference) & Book 8, Hadith 12 (In-Book)