Exodus 16:24

Revised Standard Version

So they laid it by till the morning, as Moses bade them; and it did not become foul, and there were no worms in it.

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But they did not listen to Moses; some left part of it till the morning, and it bred worms and became foul; and Moses was angry with them.

Moses said, “Eat it today, for today is a sabbath to the Lord; today you will not find it in the field.

And Moses said to Aaron, “Take a jar, and put an omer of manna in it, and place it before the Lord, to be kept throughout your generations.”