Hullin 81: Shechitah That Isn't Shechitah

More on the prohibition against slaughtering an animal and its offspring on the same day -- in an effort to determine Rav Hamnuna's take on Rabbi Shimon's approach. Note that the slaughtering of the parent animal makes the slaughtering of the offspring a prohibition, but if the offspring weren't slaughtered, then there's no prohibition in slaughtering the parent animal either. Also, slaughter of an animal that is not fit for consumption independent of the kosher shechitah - such that the kosher slaughtering fundamentally doesn't work - isn't considered "shechitah." And that which is not suitable for kosher shechitah is not eligible for the category of prohibition of "the animal and its offspring," as that depends on the shechitah being shechitah.