Exodus 16:23-30

He told them, “This is what the LORD commanded: Tomorrow will be a day of complete rest, a holy Sabbath day set apart for the LORD. So bake or boil as much as you want today, and set aside what is left for tomorrow.” So they put some aside until morning, just as Moses had commanded. And in the morning the leftover food was wholesome and good, without maggots or odor. Moses said, “Eat this food today, for today is a Sabbath day dedicated to the LORD. There will be no food on the ground today. You may gather the food for six days, but the seventh day is the Sabbath. There will be no food on the ground that day.” Some of the people went out anyway on the seventh day, but they found no food. The LORD asked Moses, “How long will these people refuse to obey my commands and instructions? They must realize that the Sabbath is the LORD’s gift to you. That is why he gives you a two-day supply on the sixth day, so there will be enough for two days. On the Sabbath day you must each stay in your place. Do not go out to pick up food on the seventh day.” So the people did not gather any food on the seventh day.