John Gill Commentary Numbers 15:4

"then shall he that offereth his oblation offer unto Jehovah a meal-offering of a tenth part [of an ephah] of fine flour mingled with the fourth part of a hin of oil:" — Numbers 15:4 (ASV)

Then shall he that offereth his offering unto the Lord
Be it of either kind before mentioned:

bring a meat offering of a tenth deal of flour, mingled with the
fourth [part] of an hin of oil ;
this was made of the tenth part of an ephah, or of an omer of fine wheaten flour, which was the quantity of about three quarts; and which was mixed and macerated with the fourth part of an hin, or with a quart and more than half a pint of oil: see (Exodus 29:40) ; rather this should be called a bread offering.