Numbers 5:19

5:19 The priest shall cause her to swear, and shall tell the woman, 'If no man has lain with you, and if you haven't gone aside to uncleanness, being under your husband, be free from this water of bitterness that brings a curse.
-World English Bible

Other Translation

5:19 And the priest shall charge her by an oath, and say unto the woman, If no man have lain with thee, and if thou hast not gone aside to uncleanness [with another] instead of thy husband, be thou free from this bitter water that causeth the curse:
-King James Version