Cross reference
Exodus 16:24
24 They laid it up until the morning, as Moses asked, and it didn't become foul, neither was there any worm in it.
Exodus 16:20
20 Notwithstanding they didn't listen to Moses, but some of them left of it until the morning, and it bred worms, and became foul: and Moses was angry with them.
Exodus 16:33
33 Moses said to Aaron, "Take a pot, and put an omer-full of manna in it, and lay it up before Yahweh, to be kept throughout your generations."