Would you say that? There is a difference, viz.: (Eating) nothar is subject to kareth ("cutting-off") and chametz is subject to kareth. If you have learned of nothar (that it is to be eliminated) only by burning, so should you learn of chametz. (No,) this is refuted by (eating of the) fats of a stoned ox, which, though (the eating is) subject to kareth, the ox need not be burned. Would you say this?