Tawus al-Yamani (may Allah have mercy on him) narrates from Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "There is no divorce in what one does not own, and there is no manumission (freeing a slave) in what one does not own."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17484