Exodus 16:35

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.

³⁴  As the LORD commanded Moses, so Aaron laid it up before the Testimony, to be kept.

³⁵  And the children of Israel did eat manna forty years, until they came to a land inhabited; they did eat manna, until they came unto the borders of the land of Canaan.

³⁶  Now an omer is the tenth part of an ephah.