Abdullah bin Abbas reported,

Fadl bin Abbas was riding behind the Messenger of Allah ﷺ when a woman from Khathaam came seeking a religious ruling from him. Fadl began looking at her and she at him, so the Messenger of Allah ﷺ kept turning Fadl's face to the other side.She said, "Messenger of Allah, the obligation of Allah upon His servants concerning the Hajj has reached my father as a very old man who cannot remain steady upon the mount. May I perform Hajj on his behalf?"He replied, "Yes."This took place during the Farewell Pilgrimage.

Muslim 3251

Sahih

حدثنا يحيى بن يحيى قال قرأت على مالك عن ابن شهاب عن سليمان بن يسار

عن عبد الله بن عباس أنه قال

كان الفضل بن عباس رديف رسول الله ﷺ فجاءته امرأة من خثعم تستفتيه فجعل الفضل ينظر إليها وتنظر إليه فجعل رسول الله ﷺ يصرف وجه الفضل إلى الشق الآخر قالت يا رسول الله إن فريضة الله على عباده في الحج أدركت أبي شيخا كبيرا لا يستطيع أن يثبت على الراحلة أفأحج عنه قال نعم وذلك في حجة الوداع

مسلم 3251صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Hajj
Chapter
Hajj on behalf of one who is unable due to disability, old age, and the like, or due to death
Numbering
Darussalam 3251
Muslim 3251