Leviticus 5:4-6

Darby Translation

⁴ Or if any one swear, talking rashly with the lips, to do evil or to do good, in everything that a man shall say rashly with an oath, and it be hid from him, when he knoweth [it], then is he guilty in one of these.

⁵ And it shall be, when he shall be guilty in one of these, that he shall confess wherein he hath sinned;

⁶ and he shall bring his trespass-offering to Jehovah for his sin which he hath sinned, a female from the small cattle, a sheep or doe goat, for a sin-offering; and the priest shall make atonement for him [to cleanse him] from his sin.