Sahih al-Bukhari 6136

'Urwa related that 'A'isha said, "'Utba ibn Abi Waqqas was given an undertaking by his brother, Sa'd, 'The son of the slavegirl of Zam'a is my son. Take him into your care.' In the year of the Conquest, Sa'd took him and said, 'He is my nephew, I gave an undertaking about him.' 'Abd ibn Zam'a stood up and said, 'He is my brother, the son of my father's slavegirl. He was born on his bed.' They both went to the Prophet, may Allah bless him and grant him peace, and Sa'd said, 'Messenger of Allah, he is my nephew. I gave an undertaking about him.' 'Abd ibn Zam'a said, 'He is my brother and the son of my father's slave. He was born on his bed.' The Prophet, may Allah bless him and grant him peace, said, 'He is yours, 'Abd ibn Zam'a.' Then the Prophet, may Allah bless him and grant him peace, said, ' The child belongs to the bed and the adulterer has stones.' Then he said to Sawda bint Zam'a, 'Veil yourself from him,' because of the resemblance he saw in him to 'Utba. He did not see her until he met Allah [i.e. died]."