Makkot 18: When Offerings Are Invalid for Kohanim to Eat

A case of a kohen who eats from a korban olah before the throwing of the blood on the altar... but even kohanim aren't allowed to eat from an olah/burnt-offering. In any case, the inappropriate eating of sacrifices leads to reason for 6 sets of lashes (or maybe 5, which is part of the discussion). Also, more on bikkurim, the first fruits - and what invalidates them as food for the kohen, or perhaps not. Plus, a comparison to mixing flour and oil for the meal-offering.