It was narrated from 'A'ish bin Anas that 'Ali said:
"I was a man who had a lot of prostatic discharge, so I told 'Ammar bin Yasir to ask the Messenger of Allah (ﷺ) (about it) because his daughter was married to me. He said: 'Wudu' is sufficient for that.'"
English reference: Vol. 1, Book 1, Hadith 154
Arabic reference: Book 1, Hadith 155