Numbers 5:15; Numbers 7:66; Numbers 28:5

15 the man shall then bring his wife to the priest, and shall bring as an offering for her one-tenth of an ephah of barley meal; he shall not pour oil on it nor put frankincense on it, for it is a grain offering of jealousy, a grain offering of memorial, a reminder of iniquity.
66 On the tenth day it was Ahiezer the son of Ammishaddai, leader of the sons of Dan;
5 also a tenth of an ephah of fine flour for a grain offering, mixed with a fourth of a hin of beaten oil.