649. 3. Imam Muhammad al-Baqir (p): God has made faith (Iman) superior to belief (Islam) just as Kaba has been made superior to the sacred mosque.(B5,C26,T3)

650. 4. Imam Jafar as-Sadiq (p) asked Abu Baseer: O Abu Muhammad! (The epithet of Abu Baseer), does Islam have a status?
Abu Baseer: Yes.
The Imam (p): Does Faith (Iman) have a higher status than Islam?
Abu Baseer: Yes.
The Imam (p): Is Piety (Taqwa) higher than Faith (Iman)?
Abu Baseer: Yes.
The Imam (p): Is Conviction (Yaqin) higher than Piety (Taqwa)?
Abu Baseer: Yes.
The Imam (p): People have been endowed with the least degree of Conviction (Yaqin)…(B5,C26,T4)

651. 5. Imam Ali ar-Reza (p) was requested to explain the difference between ‘Islam’ and ‘Belief.’
Imam Ali ar-Reza (p) quoted Imam Muhammad al-Baqir (p): Islam is the name of the religion. Belief is one degree higher than Islam, piety is one degree higher than belief, conviction is one degree higher than piety and the least that has been endowed among people is conviction.
He (p) was requested to define conviction.
The Imam (p): Trust in God, obeying His commandments, to remain content with His will and to surrender all your affairs to the will of God.(B5,C26,T5)

652. 6. Imam Ali ar-Reza (p): Belief is one degree higher than Islam, piety is one degree higher than belief and conviction is one degree higher than piety and nothing has been endowed to people higher than conviction.(B5,C26,T6)