It is narrated from Muhammad bin Amr bin Ata (may Allah have mercy on him) that Sayyidah Zaynab bint Abi Salamah (may Allah be pleased with her) asked him: What have you named your daughter? He said: I have named her Barrah. She said: The Messenger of Allah (peace and blessings be upon him) forbade this name; you named her Barrah! For the Messenger of Allah (peace and blessings be upon him) said: "Do not declare yourselves pure; Allah knows best who among you is righteous." They said: Then what should we name her? He said: "Name her Zaynab."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21079