Imam al - Mahdi's answers to various letters and requests addressedto him during his Minor Occultation as well as his guidance to introduce authoritative and trustworthy people to the public and making them distinct from profit - motivated claimants are amongst other graces of Imam al - Mahdi . In addition , his guidance and discourses in the time of Major Occultation mark continuation of his graces , guidance , and attention to the helpless and needy people . Imam al - Hadi Institute has decided to reproduce such illuminating discourses for the enquirers and scholars . The present work is in linewith other works of the Institute in the realm of the hadiths concernedwith Mahdism . The present Compendium contains the following chapters : 1 . Imamal - Mahdi's discourses during his father's lifetime ( before his immate ) ; 2 . Imam al - Mahdi's discourses in the time of his first special delegate , Uthman b . Sa`id , and the first phase of his Minor Occultation ; 3 . Imamal - Mahdi's discourses in the time of his second special delegate , Muhammad b . Uthman ; 4 . Imam al - Mahdi's discourses in the time ofhis third special delegate , Husayn b . Ruh ; 5 . Imam al - Mahdi's discoursesin the time of his fourth special delegate , Ali b . Muhammad al - Saymuri ; 6 . Imam al - Mahdi's discourses in the time of his Major Occultation ; 7 . Imam al - Mahdi's discourses during his future reappearance ; 8 . Supplications and ziarat - texts related from Imam al - Mahdi . ) 4 (