Exodus 16:25-27

Young's Literal Translation

²⁵ And Moses saith, `Eat it to-day, for to-day [is] a sabbath to Jehovah; to-day ye find it not in the field:

²⁶ six days ye do gather it, and in the seventh day -- the sabbath -- in it there is none.'

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