Sahih Muslim , Book 7, Hadith 3090 (USC-MSA) ⓘ
Fadl reported that a woman of Banu Khath'am said: Messenger of Allah, my father is very old. There is an old obligation of Hajj upon him from Allah, but he is not capable of sitting on the back of the camel. Thereupon Allah's Apostle said: Perform Hajj on his behalf.
حَدَّثَنِي عَلِيُّ بْنُ خَشْرَمٍ، أَخْبَرَنَا عِيسَى، عَنِ ابْنِ جُرَيْجٍ، عَنِ ابْنِ شِهَابٍ، حَدَّثَنَا سُلَيْمَانُ بْنُ يَسَارٍ، عَنِ ابْنِ عَبَّاسٍ، عَنِ الْفَضْلِ، أَنَّ امْرَأَةً، مِنْ خَثْعَمَ قَالَتْ يَا رَسُولَ اللَّهِ إِنَّ أَبِي شَيْخٌ كَبِيرٌ عَلَيْهِ فَرِيضَةُ اللَّهِ فِي الْحَجِّ وَهُوَ لاَ يَسْتَطِيعُ أَنْ يَسْتَوِيَ عَلَى ظَهْرِ بَعِيرِهِ . فَقَالَ النَّبِيُّ صلى الله عليه وسلم " فَحُجِّي عَنْهُ " .
also referenced under: Book 15, Hadith 456 (In-Book) & Hadith 1335 (Reference)