Numbers 5:22

5:22 and this water that causes the curse will go into your stomach, and make your abdomen swell and your thigh rot.” Then the woman must say, “Amen, amen.”

Numbers 5:27

5:27 When he has made her drink the water, then, if she has defiled herself and behaved unfaithfully toward her husband, the water that brings a curse will enter her to produce bitterness – her abdomen will swell, her thigh will fall away, and the woman will become a curse among her people.