Narrated Aisha: (the wife of the Prophet) "When the ailment of Allah's Apostle became aggravated, he requested his wives to permit him to be (treated) nursed in my house, and they gave him permission. He came out (to my house), walking between two men with his feet dragging on the ground, between `Abbas bin `Abdul--Muttalib and another man" 'Ubaidullah said, "I told `Abdullah of what `Aisha had said, `Abdullah bin `Abbas said to me, 'Do you know who is the other man whom `Aisha did not name?' I said, 'No.' Ibn `Abbas said, 'It was `Ali bin Abu Talib." `Aisha, the wife of the Prophet used to narrate saying, "When Allah's Apostle entered my house and his disease became aggravated, he said, " Pour on me the water of seven water skins, the mouths of which have not been untied, so that I may give advice to the people.' So we let him sit in a big basin belonging to Hafsa, the wife of the Prophet and then started to pour water on him from these water skins till he started pointing to us with his hands intending to say, 'You have done your job." `Aisha added, "Then he went out to the people and led them in prayer and preached to them."
USC-MSA web (English) Reference: Volume 5, Book 59, Number 727