Leviticus 5:2-6

²If anyone becomes unclean through touching unconsciously some unclean thing, such as the dead body of an unclean beast or of unclean cattle or of any unclean animal which goes flat on the earth, he will be responsible:

³Or if he becomes unclean through touching unconsciously any unclean thing of man, whatever it may be, when it is made clear to him he will be responsible:

⁴Or if anyone, without thought, takes an oath to do evil or to do good, whatever he says without thought, with an oath, having no knowledge of what he is doing; when it becomes clear to him, he will be responsible for any of these things.

⁵And whoever is responsible for any such sin, let him make a statement openly of his wrongdoing;

⁶And take to the Lord the offering for the wrong which he has done, a female from the flock, a lamb or a goat, for a sin-offering, and the priest will take away his sin.