Jami` at-Tirmidhi 323
جامع الترمذي#323SahihAbu Sa'eed Al-Khudri narrated:"A man from Banu Khudrah and a man from Banu Amr bin Awf were disputing about the Masjid that was founded upon Taqwa. The man from Banu Khudrah said: 'It is the Masjid of Allah's Messenger.' The other one said that it was Masjid Qub. So they went to ask Allah's Messenger about that. He said: 'It is this - meaning his Masjid - 'and in that one (Masjid Quba) there is much good
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih
In-book reference: 2:175