From Sahih Muslim (Hadith 5608):
Zainab, daughter of Umm Salama, reported:My name first was Barra. Allah's Messenger (ﷺ) gave me the name of Zainab. Then there entered (into the house of Allah's Prophet as a wife) Zainab, daughter of Jahsh, and her name was also Barra, and he gave her the name of Zainab
Reference: Muslim 5608