Leviticus 5:2-6

²A person that toucheth any unclean thing, or which is slain of a beast, either is dead by itself, either toucheth any other creeping beast, and forgetteth his uncleanness, he is guilty, and trespasseth.

³And if he toucheth anything of the uncleanness of man, by all the uncleanness by which he is wont to be defouled, and he forgetteth it, and knoweth this afterward, he shall be subject to that trespass.

⁴A soul that sweareth, and bringeth forth with his lips, that he should do either evil, or well, and doeth it not, and confirmeth the same thing with an oath, either with a word, and forgetteth what he swore, or said, and afterward understandeth his trespass,

⁵do he penance for his sin,

⁶and offer he of the flocks a female lamb, either a goat; and the priest shall pray for him, and for his sin.