(83) باب فِي الْمَذْىِ
Narrated Al-Miqdad ibn al-Aswad:
Ali ibn AbuTalib commanded him to ask the Messenger of Allah (ﷺ) what a man should do when he wants to have intercourse with his wife and the prostatic fluid comes out (at this moment). (He said): I am ashamed of consulting him because of the position of his daughter. Al-Miqdad said: I asked the Messenger of Allah (ﷺ) about it. He said: When any of you finds, he should wash his private part, and perform ablution as he does for prayer.
Reference: Sunan Abi Dawud 207
In-book reference: Book 1, Hadith 207
English translation: Book 1, Hadith 207