This document provides information about the Twelfth Imam, Mohammed al-Mahdi (a.t.f.s). It discusses his lineage, birthdate, titles, traditions about his future reappearance, the periods of minor and major occultation, signs that will precede his reappearance, and duties of believers as they await his return, such as supplication, charity, and moral reform. It aims to educate readers about the Imam who is the current authority and guide for Shi'a Muslims during his period of occultation.