The original pledge was deliberately designated as security when the transaction was formed. Newly arising natural increase enters as an accessory, not as a separately agreed original pledge.
Accordingly, its loss does not necessarily produce the same reduction of debt as loss of the original. The statement that every item included in a pledge must cancel an equal amount of debt on destruction would misrepresent the classical distinction.
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Why a dependent increase has different liability
Kitab al-Rahn: Storage Costs, Growth and Additional Collateral
The original pledge was deliberately designated as security when the transaction was formed. Newly arising natural increase enters as an accessory, not as a separately agreed original pledge.
Accordingly, its loss does not necessarily produce the same reduction of debt as loss of the original. The statement that every item included in a pledge must cancel an equal amount of debt on destruction would misrepresent the classical distinction.