It is narrated from Sayyiduna Fadl bin Abbas (may Allah be pleased with them both) that during the Farewell Pilgrimage, he was riding behind the Messenger of Allah (peace and blessings be upon him) when a woman from the tribe of Khath'am came and said, "O Messenger of Allah! Allah has made the obligation of Hajj upon His servants, but my father is very old, he cannot sit on a mount, and he has not performed Hajj. Can I perform Hajj on his behalf?" He replied, "Yes, you can." Abu Muhammad Imam Darimi (may Allah have mercy on him) was asked: "Is this your opinion as well?" He replied: "Yes."