Sayyiduna Jabir bin Abdullah (may Allah be pleased with both of them) narrates that the ‘Umra which the Messenger of Allah (peace and blessings be upon him) declared permissible is that (the giver) says:“This is for you and your heirs.”But if he says:“This thing is yours as long as you are alive,”then it will return to the owner. Mu’ammar says that this was also the fatwa of Zuhri.