Exodus 16:17-20

And the people of Israel did so. They gathered, some more, some less. But when they measured it with an omer, whoever gathered much had nothing left over, and whoever gathered little had no lack. Each of them gathered as much as he could eat. And Moses said to them, “Let no one leave any of it over till the morning.” But they did not listen to Moses. Some left part of it till the morning, and it bred worms and stank. And Moses was angry with them.