MOSQUE OF QUBA H 375 "The Prophet, praise and peace be upon him, would visit Quba either riding or walking. There he would offer two units of prayer (raka') in the Mosque. The Prophet, praise and peace be upon him, visited the Mosque at Quba every week on Saturday either riding or walking, and ibn Omar would do the same." R 375 Bukhari and Muslim with a chain up to ibn Omar who related this.
374- وعن ابن عمر رضي الله عنهما ، قَالَ : كَانَ النَّبيُّ صلى الله عليه وآله وسلم يزور قُبَاءَ رَاكِباً وَمَاشِياً ، فَيُصَلِّي فِيهِ رَكْعَتَيْنِ . مُتَّفَقٌ عَلَيهِ . وفي رواية : كَانَ النَّبيُّ صلى الله عليه وآله وسلم يَأتي مَسْجِد قُبَاءَ كُلَّ سَبْتٍ رَاكباً ، وَمَاشِياً وَكَانَ ابْنُ عُمَرَ يَفْعَلُهُ .