Ahmed bin al-Miqdam أحمد بن المقدام · The Book of ad-Dahaya (Sacrifices)

"The Messenger of Allah addressed us on the Day of Sacrifice and said: 'whoever prays as we pray nand offers the sacrtifice as we do, has done the rituals properly. Whoever offered the sacrifice before the prayer, that is just a sheep for meat." Abu Burdah said: 'O Messengers of Allah, by Allah, I offered my sacrifice before I went out to pray. I knew that this day is a day of eating and drinking, so I hastened to eat…

"I said: 'O Messenger of Allah, I release my dog and I catch the game, but I cannot find anything to slaughter it with, so I slaughter it with a Marwah or a stick,; He said: 'Shed the blood with whatever you wish, and say the name of Allah."'

"If the blood is shed and the name of Allah is mentioned, then eat, unless (it is slaughtered) with teeth or nails."

"I said: 'O Messenger of Allah we are going to meet the enemy tomorrow and we do not have any knives.' The Messenger of Allah said: "If the blood is shed and the name of Allah is mentioned, then eat, unless (it is slaughtered (with teeth or nails, and I will tell you about that. As for teeth, they are bones, and as for nails, they are the knives of the Ethiopians."' (Sahih )