Numbers 5:17-19 World English Bible (WEB)
17 The priest shall take holy water in an earthen vessel; and the priest shall take some of the dust that is on the floor of the tabernacle and put it into the water. 18 The priest shall set the woman before Yahweh, and let the hair of the woman’s head go loose, and put the meal offering of memorial in her hands, which is the meal offering of jealousy. The priest shall have in his hand the water of bitterness that brings a curse. 19 The priest shall cause her to take an oath 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’s authority, be free from this water of bitterness that brings a curse.