The ruling on informing of an incorrect value for the merchandise

The questioner:
In the name of Allah, the Most Gracious, the Most Merciful. Honorable Shaykh. The value of the merchandise, such as a car, is stated to be higher than its actual worth.

The Shaykh:
Yes.

The questioner:
He says: He raised the value of the merchandise, the car, so it does not equal that value, in and of itself.

The Shaykh:
I do not know what the questioner intends by raising the value of the merchandise when it does not equal that amount. What does the questioner intend? Raising the value of the merchandise. If this is lying, for example, he asks you, "How much did you buy it for?" and you say, "For one hundred," but you actually bought it for seventy. This is not permissible; this is forbidden. It is deception (tadlis) and lying. This is lying. It is obligatory that he informs of the price at which the sale took place.
Or if he asks, "What is the value of this merchandise?" and you say, "It is valued at one hundred and fifty," when it has not been valued at that amount, this is lying and not permissible. The Prophet (peace and blessings be upon him) prohibited this. This is from *najsh* (bidding up the price). The Prophet (peace and blessings be upon him) prohibited mutual *najsh*. This is *najsh*, which is informing of an incorrect value, saying it is valued at such-and-such, or that he bought it for such-and-such, in order to deceive the buyer. This falls under the *najsh* that the Messenger (peace and blessings be upon him) prohibited. Therefore, it is obligatory that if the customer asks him, he informs of the reality. If he asks, "How much did you buy it for?" or "What is it valued at?" it is obligatory that he informs of the reality. If it has not been valued, he says, "It has not been valued." If it has been valued, he says, "It is valued at such-and-such," the reality. As for saying it is valued at such-and-such while he is lying, this is *najsh*, which the Messenger (peace and blessings be upon him) prohibited. Yes.