Exodus 16:16

16This is what the Lord has commanded: ‘Gather of it, each one of you, as much as he can eat. You shall each take an aomer,
An  omer was about 2 quarts or 2 liters
according to the number of the persons that each of you has in his tent.’”

Exodus 16:32-33

32Moses said, “This is what the Lord has commanded: ‘Let an omer of it be kept throughout your generations, so that they may see the bread with which I fed you in the wilderness, when I brought you out of the land of Egypt.’” 33And Moses said to Aaron, “Take a cjar, and put an omer of manna in it, and place it before the Lord to be kept throughout your generations.”
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