This tells me only of unblemished animals (that they may not be slaughtered in the azarah [lest they be confused with offerings]). Whence do I derive (the same for) blemished animals? From (Vayikra 3:2) "and he shall slaughter it" (implying an offering only [and not chullin of any kind]) at the entrance of the tent of meeting" (i.e., the azarah.) Whence do I derive (the same for) animals and birds, (which cannot be confused with offerings)? From (Ibid. 8) "and he shall slaughter it (a sheep) before the tent of meeting" — it, and not animals and birds.