Warning Against Lying in Sales

He has another question. The questioner (S. A. M.) from Egypt says: One of my relatives asked me to bring him something from Makkah or al-Madinah. When I went to buy that item, the merchant told me: It is for twenty riyals. I said to him: No, it is for fifteen. So I bought it for that price. Is it permissible for me to sell it to my relative for twenty riyals, as the merchant said the first time, or not?
Answer: This is up to you. Do not lie. But if you sell it for twenty, or less, or more, that is up to you; there is nothing wrong with it. Because this is a commodity that does not have a known price among you. However, if it has a known price among you, do not change the price. Tell him that it is sold for such and such, and that you do not sell it for anything other than such and such. But if it does not have a known price among you, you have the choice. If you wish, sell it for the fifteen you bought it for. If you wish, sell it for more than that or less than that. And if you wish, give it to him as a gift. The matter is broad in this regard, and praise be to Allah. Yes, but do not lie. Do not say: It cost me twenty, when you are lying. And do not say: It is sixteen, or seventeen. Say the truth: It is fifteen. But do not sell it for less than twenty, or do not tell him anything, but set the price for him at that value. Yes.
The presenter: May Allah reward you. The important thing is that he does not say: I bought it for twenty?
The Shaykh: Yes, he does not lie.
The presenter: May Allah reward you.