Midrash su Levitico 8:19

17) (Vayikra 8:18) "And he presented the ram of the burnt-offering, and Aaron and his sons placed their hands on the head of the ram.": From here we derive the requirement of semichah for a burnt-offering. (Vayikra 8:19): "And he slaughtered, and Moses sprinkled the blood upon the altar roundabout.": From here we derive the requirement of sprinkling for a burnt-offering. (Vayikra 8:20): "And he cut the ram into its pieces": Everything stated explicitly about an individual burnt-offering is stated here, except flaying. And some say there is no cutting into pieces without flaying.

[(Lev. 23:40:) AND YOU SHALL TAKE FOR YOURSELVES. This text is related (to Ps. 35:10): ALL MY BONES SHALL SAY: LORD, WHO IS LIKE YOU? David has stated this verse beautifully.¹⁰⁴Tanh., Lev. 8:19; Lev. R. 30:14. You yourself know that the lulav is like a human spine, the myrtle is like the eyes, the willow is like the lips, and the ethrog is like the heart. David said: I have no greater members than these, since they outweigh the whole body (in importance). Ergo (in Ps. 35:10): ALL MY BONES SHALL SAY: LORD, WHO IS LIKE YOU?]