كتاب 4
4  
Book 4
(4)
Chapter 4
(4)
باب 4
Sahih al-Bukhari 239
The same narrator said that the Prophet (ﷺ) had said:
"You should not pass urine in stagnant water which is not flowing then (you may need to) wash in it."
وَبِإِسْنَادِهِ قَالَ ‏ "‏ لاَ يَبُولَنَّ أَحَدُكُمْ فِي الْمَاءِ الدَّائِمِ الَّذِي لاَ يَجْرِي، ثُمَّ يَغْتَسِلُ فِيهِ ‏"‏‏.‏
Reference : Sahih al-Bukhari 239
In-book reference : Book 4, Hadith 239
USC-MSA web (English) reference : Vol. 1, Book 1, Hadith 239
  (deprecated numbering scheme)