Abdullah bin Umar (may Allah be pleased with them both) narrates that the Noble Prophet (peace and blessings be upon him) said: "If a person owns a share in a slave or a slave-girl and he frees his share, then it becomes obligatory upon him to free the remaining shares of that slave or slave-girl from the other owners as well. The value will be assessed justly, and he will pay his partners according to the value of their shares. He will free that slave or slave-girl, but this is only when the person freeing has enough wealth to pay the value of his partners' shares."