What is the ruling on a broker receiving 6% of the amount from the supplier company without the buyer's knowledge, and what is the ruling on the inquirer receiving 35% of this amount in exchange for his work as a translator and technician, knowing that these amounts are not paid until after the factory is purchased with a bank loan that is likely to be usurious?

First: It is not permissible to assist an employer in purchasing a factory with an interest-based loan, due to the Almighty's saying: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression." This is unless the employer has already taken the loan or you are unaware of their situation.

Second: Regarding what the broker takes from the supplying company, if he is an agent for the buyer, it is not permissible for him to take a commission without the buyer's knowledge. However, if he is merely a broker, there is no harm in him taking the commission without the buyer's knowledge.

Third: If it is permissible to assist in completing the purchase, there is no harm for you in taking a commission, even if the purchase is made with an interest-based loan, because the prohibition of usury relates to the borrower's liability. And if the agreement between you and the broker is a partnership contract, there is no harm in your profit being a percentage of what he obtains. However, if it is a "Ju'alah" (reward-based) contract, there is a difference of opinion among scholars regarding the permissibility of your commission being a percentage.