Abu Abdullah Jafar Ibn Muhammad 'al-Sadiq stated:
“The Qaim is one of my grandchildren… HAZRAT MAHDI (PBUH) WILL BE RECOGNIZED AND HE WILL DISAPPEAR FOR A WHILE, THEN HE WILL REAPPEAR AS A YOUNG MAN AT THE AGE OF THIRTY-TWO...
(Ibn Abu Zaynab An-Numani, Al-Ghaybah Occultation, Ansariyan Publications, Iran, 2007, page 258)