And Moses said, "Let no one leave any of it till morning."
Exodus 16:19
Surrounding context
16:18 So when they measured it by omers, he who gathered much had nothing left over, and he who gathered little had no lack. Every man had gathered according to each one's need.
16:19 And Moses said, "Let no one leave any of it till morning."
16:20 Notwithstanding they did not heed Moses. But some of them left part of it until morning, and it bred worms and stank. And Moses was angry with them.