What is the ruling on selling his share in a company whose wealth is all debts that are owed by people?
Question

                What is the ruling on selling my share in a company that sells goods to people on installments, and all its wealth is debts that are owed by people? If the company owns cars that have not yet been sold, how should he sell his share?
Praise be to Allah.
    With regard to the first question: this is selling money that 
    is not available for money (cash) that is available, but of a lesser 
    amount.  This is not permissible. 

    With regard to the second question: he should sell him his 
    share of the cars and keep for himself his share of the deferred payments.