Midrash su Levitico 14:20

9) "and one ewe-lamb of its first year": It must be distinctive. "of its first year": not a one-year-old lamb. "and three tenth parts of (an ephah of) fine flour for a meal-offering mixed with oil": for the beasts (for the libations of the three lambs). I might think that (the fine flour is intended as a separate) meal-offering (for a leper), but (Vayikra 14:20) "And the Cohein shall offer upon the altar the burnt-offering and the meal-offering, (likening the meal-offering to the burnt-offering as being completely burnt) indicates that the meal-offering (in question) is that for the beasts.

13) (Vayikra 14:19) ("And the Cohein shall offer up the sin-offering, and he shall atone for the one to be cleansed from his uncleanliness, and after he shall slaughter the burnt-offering.") "And the Cohein shall offer up the sin-offering.": All of its attendant activities must be with express intention for a sin-offering. "And the Cohein shall offer up the sin-offering and he shall atone.": What is the intent of this? (i.e., The next verse concludes "and the Cohein shall make atonement for him and he shall be clean.") Because it is written (Vayikra 14:20) "And the Cohein shall offer up the burnt-offering and the meal-offering upon the altar," I might think that they are all indispensable (for his eating consecrated food). It is, therefore, written "And the Cohein shall offer up the sin-offering and he shall atone," whereby we are taught that his atonement is effected by the sin-offering. "and he shall atone for the one to be cleansed from his uncleanliness.": From his (leprosy) uncleanliness, and not from his (leprosy) uncleanliness and his zav (genital discharge) uncleanliness. "and after he shall slaughter the burnt-offering.": after this act (of sprinkling the blood of the sin-offering).

14) (Vayikra 14:20) "And the Cohein shall offer up the burnt-offering and the meal-offering upon the altar, and the Cohein shall make atonement for him, and he shall be clean." "And the Cohein shall offer up the burnt-offering": even if he had not slaughtered it expressly as such. "And the Cohein shall offer up the burnt-offering": even if he had slaughtered it before the sin-offering. "And the Cohein shall offer up the burnt-offering": We are hereby taught that the (burning of the) limbs of the burnt-offering precedes that of the devoted portions of the sin-offering. R. Shimon said: The sin-offering is like the defense attorney that comes to conciliate (the Judge). Once He has been conciliated, the gift (i.e., the burning of the limbs) follows.