Between death and resurrection lies the intermediate life (barzakh). Questioning, comfort, and punishment in the grave are affirmed; their nature need not be forced into the patterns of ordinary worldly experience.
The questions of Munkar and Nakīr concern recognition of one's Lord, religion, and Prophet. Punishment in the grave and punishment at the Resurrection are not the same stage, even though both concern recompense.
Belief in these unseen matters rests on reliable evidence, accompanied by restraint concerning unprovided details.