Foods (Kitab Al-At'imah)
Dawud :: Book 27 : Hadith 3791
Narrated Abdullah ibn Abbas:
The people of pre-Islamic times used to eat some things and leave others alone, considering them unclean. Then Allah sent His Prophet (peace_be_upon_him) and sent down His Book, marking some things lawful and others unlawful; so what He made lawful is lawful, what he made unlawful is unlawful, and what he said nothing about is allowable. And he recited: "Say: I find not in the message received by me by inspiration any (meat) forbidden to be eaten by one who wishes to eat it...." up to the end of the verse.