What is the ruling if a usurper splits a usurped item in half, and the cut diminishes the value of the resulting pieces?

Primary text

If a usurper splits an item, such as a garment, in half, and the cutting diminishes its value, the usurper must return both pieces and compensate for the diminished value (arsh of the defect). If one half is subsequently destroyed, the usurper must return the remaining half, pay the value of the destroyed half, and compensate for the diminution in value caused by the initial splitting.