Abu Dawud Book 9, Hadith Number 2812.
Chapter : On slaughter of the people of the book.
Narated By Abdullah ibn Abbas : explaining the verse “But the evil ones ever inspire their friend to contend with you” They used to say: Do not eat which Allah killed, but eat which you slaughtered. So Allah revealed the verse: “Eat not of (meats) on which Allah’s name hath not been pronounced”… to the end of the verse.