It is narrated from Sayyiduna Imran bin Husayn (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) gave judgement concerning a man who had freed six slaves at the time of his death: "The Messenger of Allah (peace and blessings be upon him) divided them into parts and freed one third."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15426