Sale of registered SIM card per se is not prohibited

Dear PAO,

I complied with the law requiring subscribers to register their SIM cards. Last month, Liza introduced me to her foreign friend who is doing business in the country. This foreigner offered to buy my SIM card for a considerable amount of money. His offer is tempting, especially since I am currently jobless, so I am contemplating selling my SIM card to him. However, I have second thoughts because I heard that selling a pre-registered SIM card is against the law. Please guide me on the matter.