(21) باب فِي الذَّبْحِ بِالسِّنِّ
It was narrated that Rafi bin Khadij said:
"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 )
Reference: Sunan an-Nasa'i 4404
In-book reference: Book 43, Hadith 44
English translation: Vol. 5, Book 43, Hadith 4409