Forward Sale and e-commerce in the statute laws citing to the Holy Quran

According to the Qur'an, the jurisprudents consider the forward sale to be the purchase of property in obligation, up to a certain date at the present price. The aim is that both exchanges, i.e the purchase price, which is called the price in the sale, and the Molem Fih, which is called the seller in the sale, should be clear in such a way that there is no ambiguity in it. According to this definition, the forward sale in banking is that banks, in order to provide a part of the working capital of production units, at the request of these units, pre-purchase their products. These units receive money from the bank and deliver the goods to the bank on time. But forward sale in e-commerce is that a person visits the site and orders the purchase of goods and pays the amount of the goods on deposit to receive the goods at the specified time.