TSK · Numbers 28:5

(Now an omer is one tenth of an ephah.)

Grain Offering Regulations: Offering of Raw Flour“‘When a person presents a grain offering to the LORD, his offering must consist of choice wheat flour, and he must pour olive oil on it and put frankincense on it.

then the one who presents his offering to the LORD must bring a grain offering of one-tenth of an ephah of finely ground flour mixed with one fourth of a hin of olive oil.