Exodus 16:21

When they measured it with an omer, he who gathered much had nothing over, and he who gathered little had no lack. They each gathered according to his eating.

Moses said to them, “Let no one leave of it until the morning.”

Notwithstanding they didn’t listen to Moses, but some of them left of it until the morning, so it bred worms and became foul; and Moses was angry with them.

On the sixth day, they gathered twice as much bread, two omers for each one; and all the rulers of the congregation came and told Moses.

He said to them, “This is that which the LORD has spoken, ‘Tomorrow is a solemn rest, a holy Sabbath to the LORD. Bake that which you want to bake, and boil that which you want to boil; and all that remains over lay up for yourselves to be kept until the morning.’”

They laid it up until the morning, as Moses ordered, and it didn’t become foul, and there were no worms in it.