Hazrat Mahdi (as) will be recognized by his faith, nobility, gravity, dignity, noble behavior and excellent moral values, by the fact he accepts gifts from none but rather gives them away, that he preaches Islam without demanding any fee from anyone, by the fact he expects no reward for his Qur’anic service and the way that everything he does benefits İslam. Muslims everywhere will speak of these virtues of his, described by the Prophet (saas), and this will represent further evidence enabling Hazrat Mahdi (as) to be recognized.
… Abu’l Jarud says:
When I asked Imam Muhammad Baqr, “... HOW WILL THE IMAM [HAZRAT MAHDI (AS)] BE KNOWN?” he replied:
“BY HIS SPIRITUAL GUIDANCE AND GRANDEUR AND BY THE GREAT MUHAMMAD’S REPETITION OF HIS [HAZRAT MAHDI’S (AS)] VIRTUES.”
(Sheikh Muhammad bin Ibrahim Nomani, al-Ghaybah al-Nomani, p. 284)
Mugaira Nasr says: When I asked Imam Jaffr Sadiq, “HOW WILL THE IMAM [HAZRAT MAHDI (AS)] BE RECOGNIZED?” he replied:
BY HIS GRANDEUR AND DIGNITY.
BY WHAT ELSE WILL HE BE RECOGNIZED? ALSO BY WHAT IS LAWFUL AND UNLAWFUL, BY THE PEOPLE’S NEED OF HIM AND BY HIS OWN NEED OF NOBODY...
(Sheikh Muhammad bin Ibrahim Nomani, al-Ghaybah al-Nomani, p. 283)