The gm' says mechtza al mechtza(ma"m) krov, i did not understand why it does not say ma"m kosher. because the point is that mma"m is kosher, a few lines later the gm' says vha ika ruba, again saying there is rov,the point is that its kosher. You also cant say the gm' just means it has a din of rov because you see by tanur its rov mamaush please enlighten me thank you
Hi! Had the Gemara said the MA"M is "kosher," it would have meant that this is a law specific to the laws of Shechitah; is this Shechitah kosher or not. That is not so, as is evident from the Gemara's comparison to Tanur. Rav and Rav Kahana are arguing a basic Machlokes about whether exactly half is equivalent to Rov (that is, Rov means that more than half is not *left over*), and it applies to many laws. (In a way, it is similar to the Machlokes we had on a recent Dafyomi (Eruvin 16a) as to whether Parutz k'Omed is considered a Mechitzah or not. Tosfos in Chulin mentions this Halachah.)
Be well,
-Mordecai