If one buys land and, before the transfer is completed in court, sells it to another, is the sale valid?

Question:
He says: Honorable Shaykh, may Allah grant you success, if a man buys land and, before the transfer is completed in court, sells it to another, is this sale valid? If he took possession of it by taking it over, meaning if he went to the land, inspected it, and knew its size, location, and boundaries,

Answer:
it is permissible for him to sell it, even if it has not been transferred, and even if it has not been registered with a deed. Yes.