(4) باب الْمَذْىِ
'Ali reported:
I felt shy of asking about prostatic fluid from the Apostle (ﷺ) because of Fatimah. I, therefore, asked al-Miqdad (to ask on my behalf) and he asked. He (the Holy Prophet) said: Ablution is obligatory in such a case.
Reference: Sahih Muslim 303 b
In-book reference: Book 3, Hadith 18
USC-MSA web (English) reference(deprecated numbering scheme): Book 3, Hadith 594