The required faith is the correct faith that Allah wants, which is to unify Allah and single Him out for all types of worship. Do not pay attention to anyone else, lest your mind be distracted. Do not rely on anyone but Allah, and do not fear anyone but Allah. Attach your heart to Allah, and do not fear the future, nor an enemy, nor calamities. Have good thoughts about your Lord, and do not hope for anything but what is with Allah, as Allah, the Most High, said: "Is he whose breast Allah has expanded to Islam so that he is upon light from his Lord? So woe to those whose hearts are hardened against the remembrance of Allah. Those are in manifest error." [Az-Zumar: 22]