Sahih Muslim | Book 15 | Hadith Number 4116

Narrated by Jabir is
Jabir is reported to have said: A person amongst the Ansar who had no other property declared a slave free after his death. Allah's Messenger (may peace be upon him) sold him, and Ibn al-Nahham bought him and he was a Coptic slave (who) died in the first year of the Caliphate of Ibn Zubair.