Who commits sin or karma? Is it the soul or the body, and if the soul commits sin then why does the body have to suffer?
Now come on; don’t get into all these technicalities and confusion.
If you are interested in knowing then do research, who am I? Do I have karma or not? If there is karma, then where is it? All this you have to sit and think.
If I answer you, my answer will never satisfy you because it will not be on the level of experience.
So you will listen to me and then after a few days you will get another doubt, and then again and again you simply go on the same trip. Best is to be silent, go deep in meditation and for some of these questions, the answers will be revealed as an experience, naturally.