Good Manners and Form (Al-Adab)
78/108. Chapter:
To change a name for better name
Sahih Bukhari
حَدَّثَنَا صَدَقَةُ بْنُ الْفَضْلِ، أَخْبَرَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، عَنْ شُعْبَةَ، عَنْ عَطَاءِ بْنِ أَبِي مَيْمُونَةَ، عَنْ أَبِي رَافِعٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ زَيْنَبَ، كَانَ اسْمُهَا بَرَّةَ، فَقِيلَ تُزَكِّي نَفْسَهَا. فَسَمَّاهَا رَسُولُ اللَّهِ صلى الله عليه وسلم زَيْنَبَ.
Narrated Abu Huraira: Zainab's original name was "Barrah," but it was said' "By that she is giving herself the prestige of piety." So the Prophet (ﷺ) changed her name to Zainab.
Reference : Sahih al-Bukhari 6192In-book reference : Book 78, Hadith 216USC-MSA web (English) reference : Vol. 8, Book 73, Hadith 212