Expressing one’s desire to meet the Imam is another responsibility of the believers.
In the supplications which are specifically related to Imam al-Zaman (ajtf) such as Du’a al-Nudbah1, there are passages (which as we know are the exact words of Imam Ja’far b. Muhammad as-Sadiq) in which this responsibility has been clearly mentioned:
عَزِيزٌ عَلَيَّ أَنْ أَرَى الْـخَلْقَ وَ لاَ تُرىٰ وَ لاَ أَسْمَعُ لَكَ حَسِيساً وَ لاَ نَـجْوىٰ
“How difficult it is for me that I am able to see all the creation, however you cannot be seen, and I do not hear any sound or whisper from you!”
The Commander of the Faithful, ‘Ali b. Abi Talib (as) has said:
هَاه! وَ أَوْمـى بِيَدِهِ إِلـى صَدْرِهِ شَوْقاً إِلـى رُؤْيَتِهِ
“Aah! (O’ how I wish I could see him!)” And then he struck his hand on his chest as a sign of longing to see the Imam (al-Mahdi).2