Sahih al-Bukhari
`Abdullah bin Al-Mughaffal Al-Muzani also said: "The Prophet (ﷺ) also forbade urinating at the place where one takes a bath."
وَعَنْ عُقْبَةَ بْنِ صُهْبَانَ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ الْمُغَفَّلِ الْمُزَنِيِّ، فِي الْبَوْلِ فِي الْمُغْتَسَلِ.
Grade: Sahih
صحيح
Reference