Virtues and Merits of the Prophet (pbuh) and his Companions

Bukhari :: Book 4 :: Volume 56 :: Hadith 733

Narrated Abu Huraira:

Allah's Apostle 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)"