Numbers 5:14

11 Yahweh spoke to Moses, saying,

12 Speak to the children of Israel, and tell them, If any man`s wife go aside, and commit a trespass against him,

13 and a man lie with her carnally, and it be hid from the eyes of her husband, and be kept close, and she is defiled, and there be no witness against her, and she isn`t taken in the act;

14 and the spirit of jealousy come on him, and he be jealous of his wife, and she be defiled: or if the spirit of jealousy comes on him, and he is jealous of his wife, and she isn`t defiled:

15 then shall the man bring his wife to the priest, and shall bring her offering for her, the tenth part of an ephah of barley meal; he shall pour no oil on it, nor put frankincense thereon; for it is a meal-offering of jealousy, a meal-offering of memorial, bringing iniquity to memory.

16 The priest shall bring her near, and set her before Yahweh:

17 and the priest shall take holy water in an earthen vessel; and of the dust that is on the floor of the tent the priest shall take, and put it into the water.