32 Moses said, “This is what the LORD has commanded: ‘Take an omer of manna and keep it for the generations to come, so they can see the bread I gave you to eat in the wilderness when I brought you out of Egypt.’ ”
33 So Moses said to Aaron, “Take a jar and put an omer of manna in it. Then place it before the LORD to be kept for the generations to come.”

References for Exodus 16:33

34 As the LORD commanded Moses, Aaron put the manna with the tablets of the covenant law, so that it might be preserved.

References for Exodus 16:34