Mukhtasar Bukhari (Abridged) 769 — Obligation and virtue of Hajj

Narrated Abdullah bin Abbas (may Allah be pleased with both of them): (My brother) Fadl was riding with the Messenger of Allah (peace be upon him) when a woman from the tribe of Khath'am came, and Fadl began to look at her and she began to look at Fadl. So the Prophet (peace be upon him) turned Fadl's face to the other side. The woman said, "O Messenger of Allah! The obligation that Allah has placed upon His servants regarding Hajj has reached my elderly and weak father (i.e., Hajj has become obligatory upon him), but he cannot remain firm on the mount. Should I perform Hajj on his behalf?" The Prophet (peace be upon him) said, "Yes, perform Hajj on his behalf." And this (incident) happened during the Farewell Hajj.