It is narrated from Sayyiduna Fadl (may Allah be pleased with both of them) that a woman from the tribe of Khath'am said, "O Messenger of Allah, my father is an old man and Hajj has been made obligatory upon him by Allah, but he does not have the strength to sit on a camel." So the Noble Prophet (peace and blessings be upon him) said: "Perform Hajj on his behalf."