It was narrated that 'Aishah said:
"They say that the Prophet (ﷺ) made a will for 'Ali,[1] 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.[1] Meaning, appointing him as the Khalifah.
Arabic/English book reference: Vol. 1, Book 1, Hadith 33