Yahya related to me from Malik that Ibn Shihab said, "The Messenger of Allah ﷺ only sacrificed one camel or one cow for himself and his family."
Malik said, "I do not know which of them Ibn Shihab said."

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