Exodus 16:27-31

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. The Israelites called the food manna. It was white like coriander seed, and it tasted like honey wafers.