Exodus 16:22-23

22Now 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.

23He 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.”