Numbers 5:20-21

20if you, however, have 1gone astray, being under the authority of your husband, and if you have defiled yourself and a man other than your husband has had intercourse with you”

21(then the priest shall have the woman 2swear with the oath of the curse, and the priest shall say to the woman), “the Lord make you a curse and an oath among your people by the Lord’s making your thigh 3waste away and your abdomen swell;