Kitáb-i-Aqdas

Question: Concerning the exchange of property held in trust for cash or other forms of property, to guard against depreciation or loss.

Answer: Regarding the written question on the exchange of property held in trust to guard against depreciation and loss, such exchange is permissible on condition that the substitute will be equivalent in value. Thy Lord, verily, is the Expounder, the Omniscient, and He, truly, is the Ordainer, the Ancient of Days.