Leviticus 5:2-3, 6-7, 18-19

“Or suppose you unknowingly touch something that is ceremonially unclean, such as the carcass of an unclean animal. When you realize what you have done, you must admit your defilement and your guilt. This is true whether it is a wild animal, a domestic animal, or an animal that scurries along the ground. “Or suppose you unknowingly touch something that makes a person unclean. When you realize what you have done, you must admit your guilt.

Then you must bring to the LORD as the penalty for your sin a female from the flock, either a sheep or a goat. This is a sin offering with which the priest will purify you from your sin, making you right with the LORD. “But if you cannot afford to bring a sheep, you may bring to the LORD two turtledoves or two young pigeons as the penalty for your sin. One of the birds will be for a sin offering, and the other for a burnt offering.

For a guilt offering, you must bring to the priest your own ram with no defects, or you may buy one of equal value. Through this process the priest will purify you from your unintentional sin, making you right with the LORD, and you will be forgiven. This is a guilt offering, for you have been guilty of an offense against the LORD.”