Imam Mahedi Ahs is quoted as having said that the sign of his confirmation (tasdiq) was that an impotent person becomes a potent man, that is, a seeker of the world became a seeker of Allah; a miser becomes a generous man, that is, a person who could not give even a dinar in charity, in the name of Allah, would give his life for the sake of Allah; an ummi (uneducated person) becomes an aalim (a learned man), that is, a person who did not know even a letter, becomes (so learned) that he would explain the meaning of Quran.
(Hashia Insaaf Nama - Hashia Sharif, N16)