Sahih Bukhari Volume 008, Book 081, Hadith Number 772.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 81. Limits and Punishments Set by Allah (Hudood)
Narrated By Abu Huraira : A drunk was brought to the Prophet and he ordered him to be beaten (lashed). Some of us beat him with our hands, and some with their shoes, and some with their garments (twisted in the form of a lash). When that drunk had left, a man said, "What is wrong with him? May Allah disgrace him!" Allah's Apostle said, "Do not help Satan against your (Muslim) brother."