Abdullah bin 'Awn bin Artaban عبد الله بن عون بن أرطبان الخزار · The Book of Purification

"They say that the Prophet (ﷺ) made a will for 'Ali, but he called for a basin in which to urinate, then he went flaccid suddenly (and died), so how could he leave a will?!" The Shaikh said: Azhar (one of the narrators) is Ibn Sa'd As-Samman. Meaning, appointing him as the Khalifah.

"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…