Ali bin Abu Talib reported,

I was a man who experienced frequent prostatic discharge, so I asked someone to question the Prophet ﷺ about it, since his daughter was married to me. The man asked, and the Prophet ﷺ replied, "Perform ablution and wash your private part."

Bukhari 269

Sahih

حدثنا أبو الوليد قال حدثنا زائدة عن أبي حصين عن أبي عبد الرحمن

عن علي قال

كنت رجلا مذاء فأمرت رجلا أن يسأل النبي ﷺ لمكان ابنته فسأل فقال توضأ واغسل ذكرك

البخاري 269صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Ghusl
Chapter
Washing madhi and wudu from it
Numbering
Darussalam 269
Bukhari 269