Claire and Jamie are visibly nervous at this twist and try to protest that stabbing the body is desecration.
It’s enough for the redcoats to decide to double check and make sure the corpse is actually dead.
The body doesn’t move and the Brits allow the Frasers to move on.
The body is wrapped in a shroud, but that’s not enough for the English, and one of them goes to stab the body in the leg to make sure that he’s really, totally, 100% dead.