Mark 10:4

They answered, "Moses allowed a man to divorce his wife, if he wrote out a divorce charge."

But her husband, Joseph, because he was an upright man and did not want to disgrace her, decided to break the engagement by secretly divorcing her.

"It was also said, 'Whoever divorces his wife must give her a certificate of divorce.'

Then they asked Him, "Why did Moses command us to give a written divorce charge, and in this way to divorce a wife?"

Treasury of Scripture Knowledge

And they said, Moses suffered to write a bill of divorcement, and to put her away.

But her husband, Joseph, because he was an upright man and did not want to disgrace her, decided to break the engagement by secretly divorcing her.

"It was also said, 'Whoever divorces his wife must give her a certificate of divorce.'

Then they asked Him, "Why did Moses command us to give a written divorce charge, and in this way to divorce a wife?"