Chapter 42: The Book of Hunting and Slaughtering
It was narrated from Ash-Sha bi that;
"Adiyy bin Hatim who was neighbor, Dakhilan and Rabitan at An-Nahrain narrated that he asked the Prophet Saying: 'I releaser my dog and I find another dog with my dog, and I do not know which of them caught (the game).' He said: 'Do not eat, for your only said the name of Allah over your dog, and not over any other dog.""
Sunan an-Nasa'i 4270