the Prophet prohibited that a man should urinate in his bathing area. And he said: "It will only cause misgivings." [He said:] There are narrations on This topic from "a man from among the Companions of the Prophet."  

أَنَّ النَّبِيَّ ﷺ نَهَى أَنْ يَبُولَ الرَّجُلُ فِي مُسْتَحَمِّهِ وَقَالَ إِنَّ عَامَّةَ الْوَسْوَاسِ مِنْهُ قَالَ وَفِي الْبَابِ عَنْ رَجُلٍ مِنْ أَصْحَابِ النَّبِيِّ ﷺ