Neither Tom nor Harry have their universal translators in the prison yet can understand everyone's language perfectly.
When one of the prisoners hands Harry his manifesto, Harry knocks it out of his hands and pages go flying, including some pages that fall behind Harry. The prisoner, who believes his manifesto very important, only picks up the few pages that fall in front of Harry's feet and then leaves.
When Tom "claims" Harry by threatening to cut the throat of the prisoner that wants Harry, the blade of the knife is facing away from that prisoner's throat.