Social security

Q 3: I reside in Holland and receive a monthly salary from Social Security. One month, the fund mistakenly gave me an increase of 1,000 guilder. Is it permissible for me to take this increase in return for the payment of the car tax? The law here states that one who owns a car must pay a quarterly tax on the car. As far as I know, taxes are unlawful in Islam.

A: You have to notify the authority which paid this increase mistakenly. It has the right to decide whether you may keep or return the money.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.