My ex-husband sold the home he bought before we married in his name. After our divorce, he decided to give me some of the proceeds from the sale. Do I get taxed on this?

I was not on the deed or loan of this home.  We had a smaller portion of the sale of this home in our divorce decree but it sold for more than he thought so he gave me more than the divorce listed.  I am not sure how to list this in taxes and if it is considered income or something I need to claim.  I read on another site that it was considered a cash gift but I am not sure about that.  It was wired to me through his bank.