Abu Hurairah (RA) reported Allah's Messenger (ﷺ) 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.
Hadith Referenceصحيح مسلم / كتاب فضائل الصحابة / 2540
Abu Sa'id reported there was some altercation between Khalid bin Walid and Abdul Rahman bin 'Auf and Khalid reviled him. Thereupon Allah's Messwger (ﷺ) said: None should revile my Companions. for if one amongst you were to spend as much gold as Uhud, it would not amount to as much as one mudd of one of them or half of it.
Hadith Referenceصحيح مسلم / كتاب فضائل الصحابة / 2541