What is the ruling on shaking hands after the salam from the prayer

Question : You have allowed it, Shaykh Muhammad. I have a second question outside of Hajj, regarding shaking hands after the prayer. For example, I say the salam to a person and shake his hand. Is this permissible?

Answer : If a person believes that shaking hands after the salam is a recommended practice (sunnah) and that it is required, then there is no doubt that this is a belief with no basis. However, if he shakes the hand of his companion as a gesture of affection and respect, and he had not seen him before, then there is nothing wrong with it. But the problem is that you find some people coming with their companion, and they both enter the mosque and pray whatever is easy for them, and then he shakes his hand. There is no need for this and no reason for it. Yes, may Allah reward you with good. May Allah bless you. In the safety and protection of Allah.