Is the fixed punishment (Hadd) for false accusation (Qadhf) nullified by a highway robber's repentance?

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The fixed punishment (Hadd) for false accusation (Qadhf) is not nullified by the highway robber's repentance, even though the robber repented for the primary offense of highway robbery, because Qadhf involves a right belonging to a human being (Haqq Adami).