What is the ruling on the shipping company bearing the loss for goods burnt due to an unknown cause, and are the company's profits lawful in this case?

The responsibility for guaranteeing goods shifts from the manufacturer to the export company if the latter acts as an agent for the customer, and the company's possession becomes equivalent to the customer's possession. However, if the purchase is made directly by the customer from the manufacturer, and the export company merely provides services, then the guarantee remains with the manufacturer until the buyer or their agent receives the goods. The shipping company is an employee (أجيرة) and does not guarantee the goods unless negligence or transgression is proven on their part; in such a case, they guarantee it to the party whose guarantee it is under. The loss falls upon the merchant if the office acts as their agent; otherwise, it falls upon the manufacturer. The office is entitled to compensation for its services from whomever commissioned them.