Leviticus 12:8
But if she cannot afford a lamb, she shall bring two turtledoves or two young pigeons, one for a burnt offering and the other for a sin offering. Then the priest will make atonement for her, and she will be clean.'"

Leviticus 13:2
"When someone has a swelling or rash or bright spot on his skin that could become an infectious skin disease, he must be brought to Aaron the priest or to one of his sons who is a priest.

Deuteronomy 24:8
In cases of infectious skin diseases, be careful to diligently follow everything the Levitical priests instruct you. Be careful to do as I have commanded them.