How can one be released from gold that was purchased in installments, knowing that returning it to one’s mother is not possible, and will the seller accept the return of many pieces?

"Purchasing manufactured gold in installments is a matter of scholarly disagreement. The majority of scholars prohibit it, while others permit it, holding that the manufacturing process transforms it from a currency into a commodity. They cite the opinions of Ibn al-Qayyim and his student Ibn Taymiyyah, who stated that permissible adornments, by virtue of permissible craftsmanship, become akin to clothes and other commodities. They permit selling it for its own kind without requiring exact equivalence, considering the excess amount to be in exchange for the craftsmanship, whether the sale is immediate or deferred, as long as it is not intended as a price.

Accordingly, if the gold purchased by the mother was manufactured, the majority view is that the contract is void, while the other view permits it. There is no objection to adopting this latter view given the impossibility of returning the gold. However, the scholarly disagreement should be explained to the mother, and it should be noted that refraining from such a transaction is more cautious."