وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، أَنَّهُ قَالَ مَا نَحَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْهُ وَعَنْ أَهْلِ بَيْتِهِ إِلاَّ بَدَنَةً وَاحِدَةً أَوْ بَقَرَةً وَاحِدَةً ‏.‏ قَالَ مَالِكٌ لاَ أَدْرِي أَيَّتَهُمَا قَالَ ابْنُ شِهَابٍ ‏.‏

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." Translation Not Available

Book Ref: Muwatta Imam Malik Book 23 Hadith 1041
Web Ref:  Muwatta Imam Malik Book 23 Hadith 11