Ayesha reported,

When the Messenger of Allah ﷺ grew gravely ill and his pain intensified, he asked his wives for permission to be nursed in my house, and they granted him permission. He came out walking between two men, his feet dragging along the ground, between Abbas bin Abdul-Muttalib and another man.Ubaydullah said, "I told Abdullah what Ayesha had said."Abdullah bin Abbas said to me, "Do you know who the other man was, the one Ayesha did not name?"I said, "No."Ibn Abbas said, "He was Ali."

Muslim 938

Sahih

حدثني عبد الملك بن شعيب بن الليث حدثني أبي عن جدي قال حدثني عقيل بن خالد قال ابن شهاب أخبرني عبيد الله بن عبد الله بن عتبة بن مسعود أن

عائشة زوج النبي ﷺ قالت

لما ثقل رسول الله ﷺ واشتد به وجعه استأذن أزواجه أن يمرض في بيتي فأذن له فخرج بين رجلين تخط رجلاه في الأرض بين عباس بن عبد المطلب وبين رجل آخر قال عبيد الله فأخبرت عبد الله بالذي قالت عائشة فقال لي عبد الله بن عباس هل تدري من الرجل الآخر الذي لم تسم عائشة قال قلت لا قال ابن عباس هو علي

مسلم 938صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Prayer
Chapter
Appointing a deputy by the imam when he has an excuse such as illness, travel, or other reasons to lead the people in prayer, and that whoever prays behind an imam who is sitting due to inability to stand must stand if he is able, and the abrogation of sitting behind a sitting imam for those capable of standing
Numbering
Darussalam 938
Muslim 938