Say: I do not find in that which has been revealed to me anything forbidden for an eater to eat of except that it be what has died of itself, or blood poured forth, or flesh of swine-- for that surely is unclean-- or that which is a transgression, other than (the name of) Allah having been invoked on it; but whoever is driven to necessity, not desiring nor exceeding the limit, then surely your Lord is Forgiving, Merciful.

They will swear to you by Allah when you return to them so that you may turn aside from them; so do turn aside from them; surely they are unclean and their abode is hell; a recompense for what they earned.

And it is not for a soul to believe except by Allah's permission; and He casts uncleanness on those who will not understand.