Leviticus 7:36

This is what Yahweh commanded to give them from the {Israelites} on the day of his anointing them; [it is] a lasting statute for their generations.

Leviticus 8:12

Then he poured out {part of} the anointing oil on Aaron's head--thus he anointed him [in order] to consecrate him.

Leviticus 8:30

Then Moses took {some of} the anointing oil and {some of} the blood that [was] on the altar, and he spattered [them] on Aaron, on his garments, and on Aaron's sons and on his sons' garments with him--thus he consecrated Aaron, his garments, and his sons and his sons' garments with him.

Exodus 40:13-15

And you will clothe Aaron with the holy garments, and you will anoint him, and you will consecrate him, and he will serve as a priest for me.

Treasury of Scripture Knowledge

Summary

Which the LORD commanded to be given them of the children of Israel, in the day that he anointed them, by a statute for ever throughout their generations.

Bible References

In the day

Leviticus 8:12
Then he poured out {part of} the anointing oil on Aaron's head--thus he anointed him [in order] to consecrate him.
Exodus 40:13
And you will clothe Aaron with the holy garments, and you will anoint him, and you will consecrate him, and he will serve as a priest for me.