From Sahih Bukhari (Hadith 3533):
Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "Doesn't it astonish you how Allah protects me from the Quraish's abusing and cursing? They abuse Mudhammam and curse Mudhammam while I am Muhammad (and not Mudhammam)
Reference: Bukhari 3533