Exodus 16:32-34

Then Moses said, “The LORD said, ‘Save two quarts of this food for your descendants. Then they can see the food I gave you to eat in the desert when I brought you out of Egypt.’ ” Moses told Aaron, “Take a jar and fill it with two quarts of manna. Then place it before the LORD, and save it for your descendants.” So Aaron did what the LORD had commanded Moses. He put the jar of manna in front of the Agreement to keep it safe.