Narrated 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.