Chullin 32: More Irregular Slaughter

There are two new Mishnayot in today's daf.  In yesterday's daf, we missed a new Mishna regarding a knife that fell and slaughtered an animal properly.  The rabbis debated whether or not such a slaughter was valid when it was not intentional and it was not done by the "you" in the directives.

Our first new Mishna states that when one is in the middle of slaughtering an animal and the knife falls, 

• if he lifted it and then completed the slaughter 
• if his clothing fell and he lifted them and then completed the slaughter 
• if he has readied the knife but became too tired and another came to complete the slaughter

Any of those interruptions invalidates the slaughter.  Rabbi Shimon says that the slaughter is not valid if the interruption is the same length of time as an interval of examination.

The second Mishna teaches us that 

• if one cuts the gullet in the standard manner of slaughter (with a back and forth motion)
• if the windpipe was severed in the standard manner, or if on severed the windpipe and then cut the gullet
• if one cut both simanim and waited for the animal to die 
• if one cut the siman and hid the knife beneath the second simon and severed from below,

the animal is ruled by Rabbi Yeshevav as being an unslaughtered carcass.  It thus imparts ritual impurity through contact with it or carrying ti.  Rabbi Akiva says that the animal is a treifa.  Thus eating it is prohibited but it does not transmit ritual impurity.

The Mishna ends with more from Rabbi Yeshevav who states a principle in the name of Rabbi Yehoshua:  Any animal rendered unfit during its slaughter because the slaughter was not performed properly is an unslaughtered carcass.  Any animal whose slaughter was performed properly and another matter caused it to be unfit as a treifa.  Rabbi Akiva agrees.