Hadith #224 (Sahih al-Bukhari)
Book: Ablutions (Wudu')
Narrator(s): Hudhayfah ibn al-Yaman
Grade: Sahih

Once the Prophet (ﷺ) went to the dumps of some people and passed urine while standing. He then asked for water and so I brought it to him and he performed ablution.

Source: https://parallelquran.com/hadith/sahih-al-bukhari-224/