Sunan Ibn Majah 161
سنن ابن ماجه#161SahihIt was narrated that Abu Hurairah said:"The Messenger of Allah said: 'Do not revile my Companions, for by The One in Whose Hand is my soul! If any one of you were to spend the equivalent of Mount Uhud in gold, it would not equal a Mudd spent by anyone of them, nor even half a Mudd
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih - Bukhari And Muslim