Is it permissible to buy goods from their owner and sell them to the customer?

Question : May Allah reward you. The questioner says: I work in the field of trade, and sometimes a customer asks me for goods that I do not have in stock. So I go to another merchant and ask him to deliver them to the customer, and I take a profit from that. What is the ruling on this work? Please inform us, may Allah reward you with good.

Answer : There is nothing wrong with it, on the condition that you tell the buyer, "The goods are not with me, but I will buy them from my neighbor for one hundred and sell them to you for one hundred and ten." If he agrees, there is no harm. But in my opinion, will the customer agree or not? He will not agree. In that case, a person must be frank in his buying and selling. He says, "By Allah, they are not with me, but I can buy them for you from [a place] for, say, one hundred and two riyals." If he says there is no harm, there is no harm.