Hadith 3800
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 ﷺ 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.