TSK · Numbers 28:5

Now an omer is the tenth part of an ephah.

"'When anyone offers an offering of a meal offering to Yahweh, his offering shall be of fine flour; and he shall pour oil on it, and put frankincense on it.

then he who offers his offering shall offer to Yahweh a meal offering of a tenth part [of an ephah] of fine flour mixed with the fourth part of a hin of oil: