38. The Book of Manners and Etiquette
٣٨۔ كتاب الآداب
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.
أَنَّ زَيْنَبَ كَانَ اسْمُهَا بَرَّةَ فَقِيلَ تُزَكِّي نَفْسَهَا فَسَمَّاهَا رَسُولُ اللَّهِ ﷺ زَيْنَبَ