Exodus 16:27-29

Young's Literal Translation

²⁷ And it cometh to pass on the seventh day, some of the people have gone out to gather, and have not found.

²⁸ And Jehovah saith unto Moses, `How long have ye refused to keep My commands, and My laws?

²⁹ see, because Jehovah hath given to you the sabbath, therefore He is giving to you on the sixth day bread of two days; abide ye each [in] his place, no one doth go out from his place on the seventh day.'