It was narrated from 'Amr bin Shu'aib, from his father, from his grand father, that:
the Messenger of Allah, returned his daughter Zainab to Abul-As bin Rabi', with a new marriage contract. (ID)
English reference (ID): Vol. 3, Book 9, Hadith 2010 (ID)
Arabic reference (ID): Book 9, Hadith 2088 (ID)