Narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with both of them), he says: The Umra (gift for life) which the Messenger of Allah (peace and blessings of Allah be upon him) enforced, its form is that the giver says: "This thing is for you and for your heirs." When he only says: "This thing is for you," then that thing will return to the original owner.