وَبِإِسْنَادِهِ قَالَ لَا يَبُولَنَّ أَحَدُکُمْ فِي الْمَائِ الدَّائِمِ الَّذِي لَا يَجْرِي ثُمَّ يَغْتَسِلُ فِيهِ
صحیح بخاری · Hadith 239
The same narrator said that the Prophet had said: "You should not pass urine in stagnant water which is not flowing then (you may need to) wash in it."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020