Chapter 1: The Book of Purification
It was narrated from Hudhaifah that the Prophet (ﷺ) went to some people' s garbage dump and urinated while standing. In his narration, Sulaiman bin 'Ubaidullah said: "And he wiped over his Khuffs," but Mansur did not mention the wiping. [1]
[1] Meaning, in this route, since Shu' bah narrated it from both Sulaiman and Mansur.
Sunan an-Nasa'i 28