צו - באנו למילואים

And he cut the ram into pieces; and Moshe burnt the head, and the pieces, and the fat.

And he brought the other ram, the ram of consecration: and Aharon and his sons laid their hands upon the head of the ram.

AND HE PRESENTED THE OTHER RAM, THE RAM OF ‘HAMILU’IM’ (CONSECRATION). I have already explained that the meaning of “consecration” is that the priests should be fully empowered to perform the Divine Service, and that this term is applied to both the altar itself and to those who perform the Service. Thus all these offerings [the bullock of the sin-offering, the ram of the burnt-offering, etc.,] were brought for the purpose of consecrating the priests, as it is written, And this is the thing that thou shalt do unto them to hallow them, to minister unto Me in the priest’s office: take one young bullock and two rams without blemish. The second ram, however, is here called specifically the ram of consecration, because it was the last of these offerings, and it was after it that their consecration was completed and they ministered before Him, blessed be He, for all these offerings were indispensable in the matter.
It is possible that the [purpose of the] sin-offering was to effect atonement for the altar and to sanctify it, for it is so written; and that the burnt-offering was to expiate for the priests, like the atonement effected by all freewill burnt-offerings, and the second ram which was the peace-offering, was a thanksgiving to G-d for having given them in His house and within His walls a monument and a memorial. Thus it was only the peace-offering which was brought for the purpose of consecration, and therefore it alone is here called “the ram of milu’im” (consecration). It is called milu’im [in the plural, although the offering for that purpose was, according to this interpretation, only one], because the fats and the thigh as well as the heave-offering of the bread were all burnt.

And you shall not go out of the door of the Tent of Meeting for seven days, until the days of your consecration be at an end: for seven days shall he consecrate you.

And you shall abide at the door of the Tent of Meeting day and night for seven days, and keep the charge of the Lord, that you die not: for so I am commanded.