WHen Mar Zutra asks that we need total destruction for liability of shen, but we learnt on daf gimel that it makes no difference how much is destroyed like regel. if you can help me i would appreciate it. thank you
The Gemara on Daf 3 writes that all though "u'Bi'er" means Mechalya Karna, as we see from the verse of "Ad Tumo," still we learn that Shen is Chayav even by Lo Mechalya Karna, from Regel. However, here the Gemara asks that every case where the animal eats should be Patur, and the only case of Shen is Tinfah Peros. On this, the Gemara asks that we cannot have that Shen should only exist in a case of Lo Mechalya Karna.