Beating him will only let him know that you can do it next time. It's no big deal to get beaten!

So don't hit him ~

Be reasonable. You can give him a reason in the form of a story. It shouldn't be difficult to make up a story with actual behavior for a 3-year-old child, should it? Hehe ~ parents should pay attention!

Some mistakes are too complicated for adults. Let go if you can, don't pursue it. After all, he is a child! Children talk nonsense, why take it seriously?