Musnad Ahmad 27:695

'Abd al-Malik ibn 'Amr narrated to us, Ibn Abi Dhi'b narrated to us, from al-Harith, from Hamzah ibn 'Abd Allah ibn 'Umar, from his father, who said: I had a wife under me whom I loved, and my father disliked her. He ordered me to divorce her, but I refused. So he came to the Prophet, may Allah bless him and grant him peace, and mentioned that to him. He sent for me and said: "O 'Abd Allah, divorce your wife," so I divorced her.