What is the ruling on one who sold a car some time ago and did not disclose its defect?

Question:
He says: Honorable Shaykh, may Allah grant you success. A man sold an old car and did not disclose the defect in it, and that was a long time ago. What is the ruling in that? And what is obligatory for him now? Is the one asking the seller or the buyer? I mean the seller. I mean he regrets what he did; because he sold it and concealed the defect in it.

Answer:
If he knew it had a defect and concealed it, then it is forbidden for him, and this is deception. But if he did not know it had a defect, and a defect appeared in it, then the sale is valid, but the buyer has the option. In any case, since time has passed, and the car may have been damaged or gone, there is nothing but leniency. He should ask for forgiveness from the other party, or satisfy him with whatever amount of money he asks for. Leniency is necessary; ask for forgiveness.