Sahih Bukhari, Chapter: Quarrels

Abd bin Zama and Sad bin Abi Waqqas carried the case of their claim of the (ownership) of the son of a slave-qirl of Zama before the Prophet (SAW). Sad said, "O Allah's Apostle (SAW)! My brother, before his death, told me that when I would return (to Makkah), I should search for the son of the slave-girl of Zama and take him into my custody as he was his son." 'Abd bin Zama said, 'the is my brother and the son of the slave-girl of my father, and was born or my father's bed." The Prophet (SAW) noticed a resemblance between Utba and the boy but he said, "O 'Abd bin Zama! You will get this boy, as the son goes to the owner of the bed. You, Sauda, screen yourself from the boy."