the Messenger of Allah returned his daughter to Abul-'As bin Rabi' after two years, on the basis of the first marriage contract.
Sunan Ibn Majah Book 9, Hadith 165
← Previous Hadith a woman came to the Prophet and became Muslim, and a man married her. Then her first husband came and said: "O Messenger of Allah, I became Muslim with her, and she knew that I was Muslim." So the Messenger of Allah took her away from her second husband and returned her to her first husband.

Sunan Ibn Majah Book 9, Hadith 164 Next Hadith → the Messenger of Allah, returned his daughter Zainab to Abul-As bin Rabi', with a new marriage contract.

Sunan Ibn Majah Book 9, Hadith 166