The Book of Games and the Animals which May be Slaughtered and the Aninals that Are to be Eaten (Kitab-us-Said wa'l-Dhaba'ih wa ma Yu'kalu min Al-Hayawan)
Muslim :: Book 21 : Hadith 4747
This hadith has been transmitted on the authority of Abu Tha'laba al- Khushani with a slight variation of (words): He (the Holy Prophet) said in regard to the game killed by (a trained) dog: Eat after three days provided it has not gone rotten.