The Book of Hajj
Riyad as-Salihin #600
كتاب الحج
وعنه أن امرأة قالت: يا رسول الله إن فريضة الله على عباده في الحج، أدركت أبي شيخًا كبيرًا، لا يثبت على الراحلة، أفأحج عنه؟ قال: «نعم». ((متفق عليه))
Ibn 'Abbas (May Allah be pleased with them) reported:
A woman came to the Messenger of Allah (ﷺ) and said, “Allah's obligation upon His slaves has become obligatory on my father in his old age. My father is very old and incapable of riding. May I perform Hajj on his behalf?” He (ﷺ) said, “Yes.”.
وعنه أن امرأة قالت: يا رسول الله إن فريضة الله على عباده في الحج، أدركت أبي شيخًا كبيرًا، لا يثبت على الراحلة، أفأحج عنه؟ قال: "نعم". ((متفق عليه))
A woman came to the Messenger of Allah (ﷺ) and said, "Allah's obligation upon His slaves has become obligatory on my father in his old age. My father is very old and incapable of riding. May I perform Hajj on his behalf?" He (ﷺ) said, "Yes.".
— Riyad as-Salihin, Hadith 600