It was narrated that Hudhaifah said: “I was walking with the Messenger of Allah صلی اللہ علیہ وآلہ وسلم and he came to some people’s garbage dump and urinated while standing up. I turned to go away, but he called me back (to conceal him), and I was just behind him. Then when he had finished, he performed Wudu and wiped over his Khuffs.” (Sahih)