Leviticus 7:36

which the LORD commanded to be given them in the day when he anointed them, of the children of Israel, and to be a duty for ever among their generations.

Leviticus 8:12

And he poured of the anointing oil upon Aaron's head, and anointed him to sanctify him.

Leviticus 8:30

And Moses took of the anointing oil and of the blood which was upon the altar, and sprinkled it upon Aaron and upon his vestments and upon his sons and on their vestments with him, and sanctified Aaron and his vestures and his sons and his sons' vestures also.

Exodus 40:13-15

And put upon Aaron the holy vestments.

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
And he poured of the anointing oil upon Aaron's head, and anointed him to sanctify him.
Exodus 40:13
And put upon Aaron the holy vestments.