1- If you are a web designer and someone comes to you and you know that he wants to design a website that he will use for prohibited purposes, then it is not permissible for you to design the website for him. 2- If you do not know anything about the reason he is asking for website design, or if the site will most likely be used for permissible and beneficial things, then there is nothing wrong with you designing it and selling it.

The appliances that the owners bring to you to fix are regarded as a trust that is left with you, and you must keep them and look after them until their owners come to collect them. However, if the owner of the appliance is later than usual in coming to collect his appliance after you have fixed it, and you have lost hope that he will return, or his leaving the appliance is detrimental to your business because you do not have much room, or because it is difficult to keep them and alike, in this case you have the right to sell these appliances at the market price, and take from that your fee as agreed upon with the customer, and set the rest of that money aside. Then if the owner comes along some day, you can give the remaining money back to him.

1- is permissible to charge a fee for acting as a broker or middleman to the seller or the purchaser or both of them, provided that it is done in accordance with the stipulated conditions or local custom. 2- If the broker is working for one of the two parties to the transaction, it is not permissible for him to make a deal with the other party to increase or lower the price. 3- If the broker is working for one of the two parties to the deal in return for a specific fee, he does not have to inform the other party of it.

If the company rents out the car to the customer for a particular period, then ownership of the car is transferred to the customer automatically, without drawing up a new contract, so that the rental contract, at the end of the stipulated period, automatically turns into a sale contract, then this kind of transaction is prohibited.