Exodus 16:16-21

16This is what the LORD has commanded: ‘Each one is to gather as much as he needs. You may take an omer1 for each person in your tent.’”

17So the Israelites did this. Some gathered more, and some less. 18When they measured it by the omer, he who gathered much had no excess, and he who gathered little had no shortfall.2 Each one gathered as much as he needed to eat.

19Then Moses said to them, “No one may keep any of it until morning.” 20But they did not listen to Moses; some people left part of it until morning, and it became infested with maggots and began to smell. So Moses was angry with them.

21Every morning each one gathered as much as was needed, and when the sun grew hot, it melted away.