It is clear that killing anything by paining body is himsa. That's why many people in Hinduism(Brahmins) generally do not prefer to eat animal food.
My doubt is whether killing an animal(any living thing) without paining its body is also a form of himsa or not?
Is separating soul from a body is himsa or separating the soul from the body by paining its body is himsa or both?
If separating the soul from the body without paining is also himsa, then how it can be justified? The soul takes another body and we applied no harm to it, how it can be ahimsa?