In Ziyarat-e-Naahiyah, Imam-e-Zamana (a.s.) has remembered Imam Husain (a.s.) in these words:
‘You were to the Messenger (s.a.w.a.) a son, an authority on the Noble Quran and its saviour. You were the pillar and supporter of the nation. You were diligent in obeying your Lord, a protector of the covenant and the oath, kept away from the paths of the sinners; were excessive in your bowing and prostrations. You had turned your face from the enticements of the world like the one who is departing from it, looking upon it with fear.
(Behaar-ul-Anwaar, vol. 101, p. 239)
This is how Imam-e-Zamana (a.s.) has articulated ten qualities and specialties of his illustrious grandfather. The truth is that Imam Husain (a.s.) and Imam Mahdi (a.s.) share a special bond. They both share the same objective. Imam Husain (a.s.) desired to safeguard the religion while Imam-e-Zamana (a.s.) will enforce the religion in the entire world.
IN-SHA-ALLAH very soon!