Exodus 16:18-20 Amplified Bible, Classic Edition (AMPC)
18 When they measured it with an omer, he who gathered much had nothing over, and he who gathered little had no lack; each gathered according to his need.
19 Moses said, Let none of it be left until morning.
20 But they did not listen to Moses; some of them left of it until morning, and it bred worms, became foul, and stank; and Moses was angry with them.
Exodus 16:18-20 New International Version (NIV)
18 And when they measured it by the omer, the one who gathered much did not have too much, and the one who gathered little did not have too little. Everyone had gathered just as much as they needed.
19 Then Moses said to them, “No one is to keep any of it until morning.”
20 However, some of them paid no attention to Moses; they kept part of it until morning, but it was full of maggots and began to smell. So Moses was angry with them.