והנותר מבשר הזבח ביום השלישי באש ישרף
We are enjoined to burn the nosar, left-over meat of a korban, after the time limit for its consumption has passed. The simple reason for the burning of nosar, is that after a few days, the meat begins to spoil and emit a putrid odor. It is no longer edible and people will be disgusted by it. Hashem does not want kodoshim, consecrated meat of a korban, to be a source of repulsion. Thus, He commands us to rid ourselves of this meat through the most effective means. (This is actually a rationale given by the Sefer HaChinuch for the…