Sahih Bukhari Volume 009, Book 092, Hadith Number 394.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 92. Holding Fast to the Qur'an and Sunnah
Narrated By Abu Musa Al-Ash'ari : Allah's Apostle was asked about things which he disliked, and when the people asked too many questions, he became angry and said, "Ask me (any question)." A man got up and said, "O Allah's Apostle! Who is my father?" The Prophet replied, "Your father is Hudhaifa." Then another man got up and said, "O Allah's Apostle! Who is my father?" The Prophet said, "Your father is Salim, Maula Shaiba." When 'Umar saw the signs of anger on the face of Allah's Apostle, he said, "We repent to Allah."