Sahih Muslim Book 25, Hadith Number 5334.

Chapter : Excellence of changing ugly names to good names.

Ibn Abbas reported that the name of Juwairlya (the wife of the Holy Prophet) was Barra (Pious). Allah’s Messenger (may peace be upon him) changed her name to Juwairiya and said: I did not like that it should be said: He had come out from Barra (Pious). The hadith transmitted on the authority of Ibn Abi ‘Umar is slightly different from it.