رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1772
The Book of the Prohibited actions
Prohibition of Urinating into Stagnant Water
عَنْ جَابِرٍ رَضِيَ اللَّه عَنْهُ : أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ نَهَى أَنْ يُبَالَ فِي الْمَاءِ الراكد. رَوَاهُ مُسلم
Jabir (May Allah be pleased with him) said: The Messenger of Allah (ﷺ) forbade urinating into stagnant water. [Muslim].
Riyad as-Salihin, 1772