Would you say that? There is a difference (between neveilah, [from which benefit may be derived] and chametz, [from which benefit may not be derived,], so that the resultant equation is:) Benefit may not be derived from nothar, and benefit may not be derived from chametz. If you have learned of nothar (that it is eliminated) only by burning, so, chametz only by burning. (No,) this is refuted by a stoned ox, which, though benefit may not be derived from it, need not be burned—Then say the same for chametz!