Musnad Ahmad 287:6

'Abd al-Razzaq narrated to us, he said: Ibn Jurayj informed us, he said: 'Abd Allah ibn 'Ubayd Allah ibn Abi Mulaykah informed us, that 'Uqbah ibn al-Harith ibn 'Amir informed him—or he heard it from him, if he did not single him out with it—that he married the daughter of Abi Ihab. Then a black slave woman said: "I have breastfed both of you." So I came to the Prophet, may Allah bless him and grant him peace, and mentioned that to him. He turned away from me. I came and mentioned it to him [again]. He said: "How [can you keep her] when she has claimed that she has breastfed both of you?" So he forbade him from her.