Sahih Bukhari Volume 009, Book 092, Hadith Number 398.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 92. Holding Fast to the Qur'an and Sunnah
Narrated By Anas bin Malik : A man said, "O Allah's Prophet! Who is my father?" The Prophet said, "Your father is so-and-so." And then the Divine Verse: "O you who believe! Ask not questions about things..."(5.101)