مُوَطَّأُ مَالِكٍ
Muwatta Malik 1050
Slaughtering Animals
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ، كَانَ يَقُولُ مَا فَرَى الأَوْدَاجَ فَكُلُوهُ .
Yahya related to me from Malik that Abdullah ibn Abbas used to say, "You can eat anything that has had its jugular vein cut."
Arabic/English book reference: Book 24, Hadith 6