Ata narrates from Jabir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) sold a mudabbar slave because of a debt.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21578
Sayyiduna Mu'adh bin Jabal narrates from Abu Ubaydah (may Allah be pleased with them both): "The offence of a mudabbar is the liability of his master."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21579