Exodus 16:22-23

22And on the sixth day they gathered twice as much food, two omers per person; and all the leaders of the community came and told Moses.

23He said to them, “This is what the Lord has said: ‘Tomorrow is a time of cessation from work, a holy Sabbath to the Lord. Whatever you want to bake, bake today; whatever you want to boil, boil today; whatever is left put aside for yourselves to be kept until morning.’”