He said in jest: "I will divorce her sister, and I will marry your sister." What is the ruling on his statement?

Question:
May Allah reward you. We will take a call from our brother Ahmad from Jeddah. Go ahead, my brother Ahmad. Peace be upon you. And upon you be peace. Ahmad, please turn the television down a little. May Allah keep you safe. At your service, my dear. Go ahead, may Allah preserve you. Ask your question. May Allah give you health. My brother, I am sitting with my wife’s brother, my cousin, and one of my brothers. Is that clear? And this one of my brothers said, he says to my cousin, "If you have any good in you, why is your wife..." in a joking manner. I told him, "I am done, there is no problem. Tomorrow I will divorce her sister and take your sister." I am saying this to the one who is making these remarks. I do not know what the ruling is on this. I was joking. He was joking, and it was all joking. You are my dear. Yes, Shaykh. Did you hear the question, Shaykh Salih? Yes. Yes. He says that he was sitting with his colleagues, Honorable Shaykh, and they were joking, so one of his colleagues said to him, "If you have any good in you, why is your wife..." He said, "I will divorce her sister and marry your sister." Statements like these, Honorable Shaykh, among colleagues and so on.

Answer:
Nothing happens from it, but it is better to avoid it. Yes.