Musnad Ahmad

Rabah says that my master married me to his Roman slave girl. I went to her, and a dark-skinned boy like me was born to her. I named him Abdullah. When the opportunity arose again, another dark-skinned boy was born, and I named him Ubaidullah. Coincidentally, my wife became the object of affection for my master's Roman slave, whose name was Yohannes. He won her over in his own language. So this time, the child that was born resembled the complexion of the Romans. I asked my wife, "What is this?" She said, "This is Yohannes' child." We presented this matter before Sayyiduna Uthman (may Allah be pleased with him). He said, "Are you content that I judge between you as the Prophet (peace and blessings be upon him) judged?" The decision of the Prophet (peace and blessings be upon him) is that the child belongs to the owner of the bed, and for the adulterer there are stones (i.e., punishment). Then Sayyiduna Uthman (may Allah be pleased with him) established the lineage of the child with me and flogged both of them, and after that, another son was born to me from her who was dark-skinned.