"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.
Sunan an-Nasa'i Book 1, Hadith 33
← Previous Hadith "The Prophet (ﷺ) had a vessel made from a date tree in which he would urinate and place it under the bed."

Sunan an-Nasa'i Book 1, Hadith 32 Next Hadith → "None of you should urinate into a burrow in the ground." They said to Qatadah: "Why is it disliked to urinate into a burrow in the ground?" He said: "It is said that these are dwelling-places of the jinn."

Sunan an-Nasa'i Book 1, Hadith 34