Exode 16:18
And when they did mete it with an omer, he that gathered much had nothing over, and he that gathered little had no lack; they gathered every man according to his eating.
Exode 16:33
And Moses said unto Aaron, Take a pot, and put an omer full of manna therein, and lay it up before the LORD, to be kept for your generations.
Exode 16:36
Now an omer is the tenth part of an ephah.