Sahih Bukhari
Sahih Bukhari Volume 001, Book 003, Hadith Number 134.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 03. Knowledge
Narated By 'Ali : I used to get the emotional urethral discharge frequently so I requested Al-Miqdad to ask the Prophet about it. Al-Miqdad asked him and he replied, "One has to perform ablution (after it)." (See Hadith No. 269).