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.