Exodus 16:30-36

30So the people rested on the seventh day. 31And the house of Israel called its name Manna: and it was like coriander seed, white; and the taste of it was like wafers made with honey.

32And Moses said, This is the thing which the LORD commanded, Fill an omer of it to be kept for your generations; that they may see the bread that I fed you in the wilderness, when I brought you forth from the land of Egypt. 33And Moses said to Aaron, Take a pot, and put an omer full of manna in it, and lay it up before the LORD, to be kept for your generations. 34As the LORD commanded Moses, so Aaron laid it up before the Testimony, to be kept. 35And the children of Israel ate manna forty years, until they came to a land inhabited; they ate manna, until they came to the borders of the land of Canaan. 36Now an omer is the tenth part of an ephah.