Hadith 27
Chapter 24: Allowing one To Urinate While Standing In A Desolate Area - كتاب الطهارة
أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ أَنْبَأَنَا مُحَمَّدٌ، قَالَ أَنْبَأَنَا شُعْبَةُ، عَنْ مَنْصُورٍ، قَالَ سَمِعْتُ أَبَا وَائِلٍ، أَنَّ حُذَيْفَةَ، قَالَ إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم أَتَى سُبَاطَةَ قَوْمٍ فَبَالَ قَائِمًا .
It was narrated that Mansur said:
"I heard Abu Wa'il (say) that Hudhaifah said: 'The Messenger of Allah (ﷺ) came to some people's garbage dump and urinated while standing.'"
Reference : Sunan an-Nasa'i 27
In-book reference : Book 1, Hadith 27