Exodus 16:21-23

So they gathered it every morning, each as much as he needed, because when the sun was hot it melted. Now on the sixth day they gathered twice as much bread, two omers for each person; and all the leaders of the congregation came and told Moses. He said to them, “This is what the LORD has said: ‘Tomorrow is a solemn rest, a holy Sabbath to the LORD’; bake and boil what you will bake and boil [today], and all that remains left over put aside for yourselves to keep until morning.”