سنن أبي داود

Narrated Hudhaifah :

The Messenger of Allah ( sal Allaahu alayhi wa sallam ) came to a midden of some people and urinated while standing. He then asked for water and wiped his shoes.

Abu Dawud said: Musaddad, a narrator, reported: I went far away from him. He then called me and I reached just near his heals.