Musa bin 'Uqba موسى بن عقبة · The Book on Sacrifices

"The Messenger of Allah (ﷺ) slaughtered a horned male ram of fine pedigree, (around) his mouth was black, and his legs were black, and (around) his eyes was black.

"The Messenger of Allah (ﷺ) delivered a sermon to us on the Day of Nahr and he said: 'None of you should slaughter until he performs the Salat." He said: 'So my maternal uncle stood and said: ' O Messenger of Allah, this is the day in which meat is disliked, and I hastened my sacrifice to feed my family and the people of my dwellings - or - 'my neighbors.' He said: 'Repeat your slaughter with another.' He said:…