Ruling on referring people to an insurance company in return for payment
Question

                I am a student living in Germany. I had a car that was insured under compulsory insurance, and now my brother has a car which he has to insure. I said to him: Insure it with the same company I used, and the company will give me some money for this referral, and thus I will get back some of the money that I spend without getting anything in return. Is this money halaal?.
Praise be to Allah.
      Commercial insurance is haraam in all 
      forms. If a person is compelled to get insurance, it is permissible for 
      him to get insured, and the sin is on the one who compelled him to get 
      insurance. See question no. 
      36955. 

    If your brother’s taking out insurance with 
    the same company means that they will give you some money, there is nothing 
    wrong with that, because it is payment for acting as a middleman and 
    referring someone to the company, so long as the company is going to give 
    you this money from its profits and will not add any part of that payment 
    for the referral to the money they charge to the one whom you referred to 
    them. 

    This referral has to do with an action that 
    is permissible, because your brother was compelled to take out insurance as 
    you said. But referring someone who is not compelled or obliged to take out 
    insurance is not permissible, because it is pointing out the way to sin. 

    And Allah knows best.