Sahih Muslim
The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fadail Al-Sahabah)
Book Number: 031 / Hadith Number: 6167
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Do not revile my Companions, do not revile my Companions. By Him in Whose Hand is my life, if one amongst you would have spent as much gold as Uhud it would not amount to as much as one much on behalf of one of them or half of it.