The ruling on buying a commodity for another person and then selling it to them on installments

The questioner:
The questioner asks: May Allah inform you, is it permissible for a man to say to another man, "Go and buy this car for a cash price or a deferred price, then sell it to me on installments, and take it?"

The Shaykh:
This has become very common nowadays. People come to al-Rajhi and others and say, "I want that specific piece of land, or the car that belongs to so-and-so." The intermediary goes and buys it and sells it to the person on installments. This is called the "order to buy" or the "promise to buy." This opens the door to selling what you do not possess, which the Messenger (peace and blessings be upon him) forbade.
Therefore, this is not permissible unless the goods are in the possession of the seller. If the goods are in the possession of the seller, it is permissible for him to sell them for a cash price or a deferred price. As for goods that are with the owner or with other people, it is not permissible for a person to negotiate or agree on them with another person while they are in the ownership of others. This is a means to selling what you do not possess. Yes, the Prophet (peace and blessings be upon him) said to Hakim ibn Hizam: So it is obligatory for those who want to sell to people on installments to stock their goods in their warehouses, in their car garages, or in their storage facilities before they accept customers. As for selling and buying with the property of people when it is not in their hands, this is not permissible. Yes.

The questioner:
For example, a car right now. It is permissible to sell it, meaning, but not on his own account.

The Shaykh:
If you bought it for a deferred price, do not sell it to the creditor who sold it to you. Sell it to someone else, okay?

The questioner:
Yes.

The Shaykh:
The showroom has not taken possession of it. It must be moved from the showroom. Possession is not complete until it is moved from the seller's showroom to the buyer's showroom, or the buyer's house, or the buyer's location. Yes, because the Prophet (peace and blessings be upon him) . Therefore, this is not permissible because it has not been taken into possession.

The questioner:
O Shaykh.

The Shaykh:
But you have not taken possession of it. As long as it is in the possession of the seller, you have not taken possession of it yet. Take it out of the seller's showroom, and once you have taken it out, you may dispose of it.