(4) Muhammad bin Ya’qoob narrated from Muhammad bin Yahya from Ahmad bin Muhammad from Ali bin al-Hakam from ar-Rabee’ bin Muhammad bin al-Mussalli from Abdullah bin Sulayman al-Aamiri that Abu Abdullah as-Sadiq had said: “The world will still have an authority from Allah knowing the permissible and impermissible things and inviting people to the way of Allah.”