Ali bin Abu Talib reported,

I said to Miqdad, "When a man consummates marriage with his wife and emits prostatic fluid without intercourse, ask the Prophet ﷺ about that, for I am too shy to ask him myself since his daughter is married to me."So he asked him, and the Prophet ﷺ said, "He should wash his private parts and perform ablution as he does for prayer."

Nasai 153

Daif

أخبرنا إسحق بن إبراهيم قال أخبرنا جرير عن هشام بن عروة عن أبيه

عن علي رضي الله عنه قال

قلت للمقداد إذا بنى الرجل بأهله فأمذى ولم يجامع فسل النبي ﷺ عن ذلك فإني أستحي أن أسأله عن ذلك وابنته تحتي فسأله فقال يغسل مذاكيره ويتوضأ وضوءه للصلاة

النسائي 153ضعيف
Contents
Reference
Commentary
Ayat
Collection
Sunan Nasai Sughra
Book
Purification
Chapter
What invalidates wudu and what does not invalidate wudu from madhi
Numbering
Darussalam 153
Nasai 153