What is the permissible financial amount that a brother may take from the insurance company after his car is involved in an accident, knowing that he pays compulsory insurance and is obligated to pay an annual road tax, and that he sold his car for less than its value?

If subscribing to insurance is compulsory, then there is no sin upon the subscriber. However, he is not permitted to benefit from more than the amount he subscribed with (800). Any excess amount must be disposed of by giving it to the poor and needy. But if the paid amount is due from the person who caused the accident, and the insurance company paid it on his behalf, then there is no harm in benefiting from it.