Muwatta Imam Malik Book of Hajj, Hadith 87

Malik said, "It is not halal to eat any game that has been hunted in the Haram, or has had a dog set after it in the Haram and then been killed outside the Haram. Anyone that does that has to pay a forfeit for what has been hunted. However, some one that sets his dog after game outside the Haram and then follows it until it is hunted down in the Haram does not have to pay any forfeit, unless he set the dog after the game near to the Haram. The game should not be eaten, however. If he set the dog loose near the Haram then he has to pay a forfeit for the game."