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وَعَنْ عُقْبَةَ بْنِ صُهْبَانَ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ الْمُغَفَّلِ الْمُزَنِيِّ، فِي الْبَوْلِ فِي الْمُغْتَسَلِ.
`Abdullah bin Al-Mughaffal Al-Muzani also said:
“The Prophet (ﷺ) also forbade urinating at the place where one takes a bath.”
USC-MSA web (English) reference