It is narrated from Sayyiduna al-Fadl bin Abbas (may Allah be pleased with him) that a woman came to the Messenger of Allah (peace and blessings be upon him) and said: My father has reached the time of Hajj, but he is a very old man and cannot ride a camel; shall I perform Hajj on his behalf? He (peace and blessings be upon him) said: "Perform Hajj on his behalf."
Hadith Referenceالمعجم الكبير للطبراني / باب الفاء / 15811