It is narrated from Sulayman bin Yasar (may Allah have mercy on him) that a woman from the tribe of Khath'am asked the Messenger of Allah (peace and blessings be upon him) for a ruling during the Farewell Hajj,
while Sayyiduna al-Fadl bin Abbas (may Allah be pleased with them both) was riding behind the Messenger of Allah (peace and blessings be upon him) on the mount.
The woman said: "O Messenger of Allah, the obligation of Hajj that Allah, the Mighty and Majestic, has placed upon His servants has reached my father while he is a very old man and is not able to sit firmly on a mount. Will it suffice for him if I perform Hajj on his behalf?"
The Messenger of Allah (peace and blessings be upon him) said: "Yes."