The Prophet ﷺ reported with the same meaning, that he said he would not shield himself from his urine. Abu Muawiya's version says, he would not keep himself clear of it.
حدثنا عثمان بن أبي شيبة حدثنا جرير عن منصور عن مجاهد
عن النبي ﷺ بمعناه قال كان لا يستتر من بوله وقال أبو معاوية يستنزه
No references are available.
Bukhari transmitted it in the Book of Wudu, in the chapter titled "One of the major sins is not to protect oneself from one's urine," hadith no. 216, from Uthman bin Abu Shayba, through this same chain.