Is there Scriptural Evidence that Moses had a command that made it Lawful for a Man to Divorce his Wife? From Jesus' answer in this Gospel passage,


  Teaching about Divorce Mark 10:1-3 (RSVCE)
  10 And he left there and went to the region of Judea and beyond the Jordan, and crowds
  gathered to him again; and again, as his custom was, he taught them. 2
  And Pharisees came up and in order to test him asked, “Is it lawful
  for a man to divorce his wife?” 3 He answered them, “What did Moses
  command you?”


is there scriptural evidence to show that Moses had a command that made it Lawful for a Man to Divorce his Wife?

This question was prompted by The seriousness of sin changed?.

If Moses commanded [from God], it would seem that God had made a reversal twice: After establishing marriage in Gan Eden, the reversal with Moses, and a reversal back again with Jesus.
Moses did in fact allow divorce, it was not a law only a permission.

It was permitted here;


  Deuteronomy 24:1-4 KJV  When a man hath taken a wife, and married her, and it come to pass that she find no favour in his eyes, because he hath found some uncleanness in her: then let him write her a bill of divorcement, and give [it] in her hand, and send her out of his house.  And when she is departed out of his house, she may go and be another man's [wife]. And [if] the latter husband hate her, and write her a bill of divorcement, and giveth [it] in her hand, and sendeth her out of his house; or if the latter husband die, which took her [to be] his wife; Her former husband, which sent her away, may not take her again to be his wife, after that she is defiled; for that [is] abomination before the Lord: and thou shalt not cause the land to sin, which the Lord thy God giveth thee [for] an inheritance.


Jesus however said:


  Matthew 5:31 and 32  KJV It hath been said, Whosoever shall put away his wife, let him give her a writing of divorcement: But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery. 


and:


  Matthew 19:3 through 9  KJV The Pharisees also came unto him, tempting him, and saying unto him, Is it lawful for a man to put away his wife for every cause? And he answered and said unto them, Have ye not read, that he which made them at the beginning made them male and female, And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh? Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder. They say unto him, Why did Moses then command to give a writing of divorcement, and to put her away? He saith unto them, Moses because of the hardness of your hearts suffered you to put away your wives: but from the beginning it was not so. And I say unto you, Whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery. 


So from this we see that Divorce is a man made law, and not permitted by God.

Many read:


  Matthew 19:9  And I say unto you, Whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery. 


To say; that it is okay to divorce a spouse for Adultery, while other read it to say; that if a man divorce his wife, unless she has already committed adultery he causes her to commit adultery.

You must make your own decision  as to how that Scripture reads.