Numbers 5:19-20

19And the priest shall adjure her, and say unto the woman, If no man have lain with thee, and if thou hast not gone astray in uncleanness, in being with another instead of thy husband, be free from this bitter water that bringeth the curse.

20But if thou hast gone astray to another instead of thy husband, and hast been defiled, and a man other than thy husband have lain with thee,