Is the usufructuary benefit (Zawa'id) derived from usurped property liable for guarantee (Daman) by the usurper?

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The usufructuary benefits accruing from usurped property, such as fats, acquired skills, tree fruits, and animal offspring, are guaranteed by the usurper upon their destruction while in his possession. This liability applies whether the item is destroyed in isolation or along with its principal source. This ruling is held by Al-Shafi'i. The reasoning is that these additions constitute the property of the dispossessed party and came into the usurper's possession through the act of usurpation; therefore, the usurper guarantees them against destruction, similar to the principal property. Furthermore, the argument that the establishment of the usurper's possession over these additions is not his own doing is invalid because retaining the original usurped item constitutes causing his possession over the additions to be established, and possessing the original item is prohibited.