It was narrated that Abu Jabirah bin Dahhak said:"(Allah's saying) "Nor insult one another by nicknames(Surah Al Hujarat 49:11)" was revealed concerning us, the Ansar. When the Prophet(ﷺ) came to us, a man among us would have two or three names, and the Prophet(ﷺ) might call him by one of those names, only to be told: "O Messenger of Allah(ﷺ), he does not like that name." Then:"Nor insult one another by nicknames." was revealed

English translation · Sunan Ibn Majah