It wasnarrated that 'Ali bin Abu Talib said:
"The Messenger of Allah(ﷺ) commanded me to look after his sacrificial camels, to share outtheir covers and skins, and not to give the butcher any of it. Hesaid: 'We will give him (his wages).'" (FR)
English reference (FR): Vol. 4, Book 25, Hadith 3099 (FR)
Arabic reference (FR): Book 25, Hadith 3218 (FR)