 The Mishnah's general principle was that whenever the death occurred in the course of a downward movement, the culpable person went into banishment, but if the death did not occur in the course of a downward movement, the person did not go into banishment.If while chopping wood, the iron slipped from the ax handle and killed someone, Rabbi taught that the person did not go into banishment, but the sages said that the person did go into banishment.If from the split log rebounding killed someone, Rabbi said that the person went into banishment, but the sages said that the person did not go into banishment.