(1513) It is obligatory to perform Hajj (once in a life time) and its superiority
Narrated `Abdullah bin `Abbas: Al-Fadl (his brother) was riding behind Allah's Apostle and a woman from the tribe of Khath'am came and Al-Fadl started looking at her and she started looking at him. The Prophet turned Al-Fadl's face to the other side. The woman said, O Allah's Apostle! The obligation of Hajj enjoined by Allah on His devotees has become due on my father and he is old and weak, and he cannot sit firm on the Mount; may I perform Hajj on his behalf? The Prophet replied, Yes, you may. That happened during the Hajj-al-Wida (of the Prophet ).