The reason for not selling gold on credit, unlike other goods

Question:
This is the last question. He says: Your Excellency mentioned that gold is not sold except for cash, while other goods are sold on installment or on credit. What is the reason for not selling gold? May Allah reward you.

Answer:
The reason is that the sale of goods does not involve riba (usury or interest), whereas selling gold for money involves riba. Not all money involves riba; there is money in which riba does not enter, so it is permissible to sell it for cash or on credit. As for the categories specified by the Messenger (peace and blessings be upon him), which are the six categories , these are not sold except under conditions that involve riba, either riba al-fadl (usury of excess in a like-for-like exchange) or riba al-nasi'ah (usury of deferment). Ahm.
Yes, gold and silver are six categories: dates for dates, , gold for gold, silver for silver, and by analogy, anything that shares with them the operative cause of riba from the remaining matters that are measured by volume or weight; because the operative cause of riba according to the Hanbalis is measuring by volume or weight, so anything that is measured by volume or weight involves riba.

The presenter:
May Allah pray upon you and upon the Shaykh, and may He bless you, and may Allah pray upon our Prophet Muhammad.