Hazrat Mahdi (as) will not be influenced by anyone, by any idea or any sect

 … Don’t you know that except the Qaim (Hazrat Mahdi (as)) behind whom the Prophet Jesus (as), son of Mary will perform the prayer, all of us from the Ahl al-Bayt will have the oath of allegiance to that time’s taghoot [every entity, power, demon that do not recognize the domination of Allah] on them [irreligion will prevail during the time of Hazrat Mahdi (as), almost everyone will fall under this system]? Almighty Allah will conceal his appearance and hide his person. THUS WHEN HE APPEARS NOBODY’S OATH OF ALLEGIANCE WILL LIE ON HIM... (Sheikh al-Saduq, Kamal al-Din, Vol.1, p. 305)

Hasan ibn Munzir narrates from Zurara that Imam Jaffar Sadik stated: “I swear that your owner [Hazrat Mahdi (as)] will eventually appear AND WILL HAVE NOBODY’S OATH OF ALLEGIANCE ON HIM. (Sheikh Muhammad ibn Ibrahim Numani, al-Ghaybah al-Numani, p. 402)

Ibrahim ibn Omar Yamani says: Imam Abu Abdullah stated: “When the Qaim [Hazrat Mahdi (as)] comes, HE WILL APPEAR WITH NO-ONE’S OATH OF ALLEGIANCE ON HIM.” (Sheikh Muhammad ibn Ibrahim Numani, al-Ghaybah al-Numani, p. 218-219)