Yahya related to me from Malik that Ibn Shihab said, "TheMessenger of Allah, may Allah bless him and grant him peace, onlysacrificed one camel or one cow for himself and his family."Malik said, "I do not know which of them Ibn Shihab said."
USC-MSA web (English) reference: Book 23, Hadith 11
Arabic reference: Book 23, Hadith 1041