It was narrated from 'Abdullah bin 'Abbas:
Al-Fadl bin 'Abbas was riding behind the Messenger of Allah when a woman from Khath'am came and asked him a question. Al-Fadl started looking at her and she at him, and the Messenger of Allah turned Al-Fadl's face to the other side. She said: 'O Messenger of Allah! The command of Allah has come for His slaves to perform Hajj, but my father is an old man and cannot sit firmly in the saddle; should I perform Hajj on his behalf ?, He said: 'Yes That happened during the Farwell Pilgrimage.''(Shih)