Urwa bin al-Mughira bin Shu'ba عروة بن المغيرة بن شعبة الثقفي · The Book of Purification

I was one night with the Messenger of Allah (ﷺ) on a journey. He said to me: Have you any water with you? I said: Yes. He (the Holy Prophet) came down from his ride and went on till he disappeared in the darkness of night. He then came back and I poured water for him from the jar. He washed his face, He had a woollen gown on him and he could not bring out his forearms from it…

"I poured water for the Messenger of Allah (ﷺ) when he performed Wudu' during the battle of Tabuk, and he wiped over his Khuff."

"We were with the Prophet (ﷺ) on a journey, and he tapped me on the back with a stick he had with him, then he turned off (route) and I turned off with him until he came to such and such an area. Then he made his camel stop and went away until he disappeared from me, then he came back and said: 'Do you have water with you?' I had a water skin with me, so I brought it…

It was narrated from Al-Mughirah bin Shu'bah that the Messenger of Allah (ﷺ) went out to relieve himself, and Al-Mughirah followed him, (carrying) a vessel of water. He poured water for him when he had finished relieving himself, and he performed Wudu' and wiped over his Khuffs.