Reference for Chullin 204:31

א"ל אביי

R'Simeon B'Lakish said: The verse: 'Thou shalt not eat the life with the flesh', refers to a limb [severed] from the living creature and als to flesh [severed] from a living creature; and the verse: ' Ye shall not eat any flesh in the field, that is tre [torn of beasts]', refers to flesh of a trefah animal.