A True Story

Half a cow is Kosher & the other half is Treifah

The Pischei Teshuva (Y.D. 110 sk4) brings

a story that actually happened.

A  butcher Schechted 7 cows. All seemed to

be kosher. He sent 2 ½ cows to the shop

(Yatkeh) and the rest he kept at home. After

the 2 ½  cows were sent away (פרוש) he

discovered one stomach(unknown from which cow)

was pierced (Treifah)

Since 6 out of 7 animals are kosher we should

assume on each piece of meat that it comes 

from the majority (kosher)

But there are two important rules in רוב.

1)      כל קבוע כמחצה על מחצה

At the place where ספק originated,  we don’t follow רוב.

2)      כל דפרוש מרובא פרוש

If the object left the original place, we do follow  רוב.

The two whole cows at the Yatkeh being they left

the house where the ספק originated (פרוש) we follow רוב

(6 out 7 are kosher)  therefore they are kosher. 

The four whole cows at home (קבוע) we don’t follow  רוב

and are all Treifah.

The two Halves, we have a three-way מחלוקת if both are kosher

or both are Treifah and the Pri Chadash who holds, the half

at home (קבוע) is Treifah and the half at the Yatkeh (פרוש) 

is kosher.