Midrash su Levitico 7:11

1) (Vayikra 3:1): "And if a sacrifice of peace-offerings (shelamim) is his offering": R. Yehudah says: Whoever brings shelamim brings shalom (peace) to the world. This tells me only of shelamim. Whence do I derive a thanksgiving offering (as bringing peace)? I include it, for it is a variety of shelamim (see Vayikra 7:11-12). And whence do I derive a burnt-offering? In include it, for it is brought (in fulfillment of) a vow and (as) a gift. And whence do I derive (offerings of) the first-born, the tithe, and the pesach? I include them (as bringing peace), for they are not brought for sin. And whence do I derive a sin-offering and a guilt-offering? From (the extra) "sacrifice." And whence do I derive (offerings of) fowl, meal-offerings, wine, frankincense and wood? From (the extra) "his offering" — so that all who bring an offering bring peace to the world.

1) (Vayikra 7:11) ("And this is the law of the sacrifice of peace-offerings which one shall offer to the L–rd. (Vayikra 7:12) If for thanksgiving he shall offer it, then he shall offer with the sacrifice of thanksgiving, unleavened cakes mixed with oil, and unleavened cakes spread with oil, and cakes of soaked fine flour mixed with oil.") What is the intent of (Vayikra 7:11) "which one shall offer" (and (Vayikra 7:12) "he shall offer it")? (It could simply have been written "If for thanksgiving, then he shall offer, etc.") (They are written for the following purpose:) Whence do we derive that if one set aside his thank-offering and it was lost, and he set aside a different one in its place, after which the first was found, so that now both are standing before him — whence do we derive that he may offer up whichever he wishes, and its loaves along with it? From (a thank-offering) "which one shall offer." I might think that both required loaves. It is, therefore, written "he shall offer it" — one requires loaves and not both.

2) But does it not follow a fortiori (that lan obtains in a bamah), viz.: If a bird, which is not rendered unfit (as an offering) by a blemish, is rendered unfit by lan, bamah offerings, which are rendered unfit by a blemish — how much more so should they be rendered unfit by lan! — No, why is it that a bird, even though it is not rendered unfit by a blemish is rendered unfit by lan? Because (sacrifice by) a zar (a non-Cohein) renders it unfit. But would you, therefore, say of bamah offerings that because a blemish renders them unfit, lan should render them unfit? (This is not so,) because a zar does not render them unfit. And because a zar does not render them unfit, lan should not render them unfit! It is, therefore, written (Vayikra 7:11): "And this is the law of the sacrifice of peace-offerings … (Vayikra 7:12) If for thanksgiving he shall offer it, etc." (i.e., there is one law for all offerings, whether in the tent of meeting or in a bamah) — equating the time (and the lan) factor in a bamah with that in the tent of meeting.