The Messenger of Allah ﷺ sacrificed some of his sacrificial animals with his own hand, while others were sacrificed by someone else.
حدثنا إسحاق أخبرنا مالك عن جعفر عن أبيه
أن رسول الله ﷺ نحر بعض هديه بيده وبعضه نحره غيره
No references are available.
Its isnad is sahih. It previously appeared at and its cross-references, and those narrations explained that it was Ali who slaughtered the rest.