Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) said: Sayyidah Zaynab (may Allah be pleased with her), the daughter of the Prophet (peace and blessings be upon him), accepted Islam a year before her husband Abu al-As bin al-Rabi'. Then he also accepted Islam, and the Prophet (peace and blessings be upon him) returned her to him with a new marriage contract.
Hadith Referenceالمعجم الكبير للطبراني / باب اللام / 16505