[If] one derived half a perutah’s worth of benefit [from a consecrated object] and deteriorated [it] by half a perutah, or he derived a perutah’s worth of benefit from one object and de- teriorated a different object by one perutah’s worth, he has not committed me’ilah until he derives one perutah’s worth of benefit and causes one perutah’s worth of deterioration in one object.