Is it permissible to trade gold with a company that specifies a certain number of grams for investment, where the customer pays the value of the gold in money, not gold, and the profit is 70% for the customer and 30% for the company, with the possibility of terminating the agreement and receiving the money or gold, and increasing the amount traded at any time?

There is no objection to the aforementioned transaction if the company invests the gold provided by the client, provided that the regulations for trading in gold are observed, such as the actual or constructive possession (qabdh) taking place at the time of the contract. However, if the company's capital is gold, then there is a difference of opinion among scholars regarding the validity of such a partnership. It must be noted that the condition for the company to guarantee the capital is void, but the contract itself remains valid while the condition is nullified.