Numbers 5:15; Numbers 28:5

Numbers 5:15

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

Numbers 28:5

5 And a tenth part of an ephah of flour for a meat offering, mingled with the fourth part of an hin of beaten oil.