It was narrated from Jabir that: the Messenger of Allah (ﷺ) sold a Mudabbar.
It was narrated that Jabir bin 'Abdullah said: “A man among us promised freedom to a slave after his death, and he did not have any property other than him (this slave). So the Prophet (ﷺ) sold him, and Ibn (Nahham), a man from Banu 'Adi, bought him.”
It was narrated from Ibn`Umar that the Prophet (ﷺ) said: “The Mudabbar is part of the one third of the estate.”