The Holy Prophet (S.A.W.) (said to Syeda Fatimah (A.S.): On the Day of Judgment, you shall intercede for the ladies and I shall intercede for the men; every person who has wept over the tragedy of Hussain (A.S.), we shall take him by the hand and lead him into Paradise.
Bihar al-Anwar vol. 44,pg. 292.

For those unable to go for the ziarat of Imam Husain (A.S.) on the day of A'shura, Imam Baqir (A.S.) mentions the manner of performing A'zadari as follows:
He should mourn over Husain (A.S.), weep for him and instruct the members of the house to weep for him. He should establish the mourning ceremony in the house by exhibiting lamentions and grief over him; the people should meet one another in their homes and offer condolences and consolations to each other over the calamities which befell him.
Kaamil al-Ziyaraat, Pg.: 175.

The Holy Prophet (S.A.W.) said: Surely, there exists in the hearts of the Mu' mineen, with respect to the martyrdom of Hussain (A.S.), a heat that never subsides. Mustadrak al-Wasail, vol. 10,pg. 318

2. A'ashura- A day of grief The Holy Prophet (S.A.W.) said: O' Fatimah! Every eye shall be weeping on the Day of Judgment except the eye which has shed tears over the tragedy of Hussain (A.S.) for surely, that eye shall be laughing and shall be given the glad tidings of the bounties and comforts of Paradise. Bihar al-Anwar, vol,: 44;pg,:293

The Holy Prophet (S.A.W.) said: (On the Day of Judgment, a group would be seen in the most excellent and honourable of states. They would be asked if they were of the Angels or of the Prophets. In reply they would state): "We are neither Angels nor Prophets but of the indigent ones from the ummah of Muhammad (S.A.W.)". They would then be asked: "How then did you achieve this lofty and honourable status?" They would reply: "We did not perform very many good deeds nor did we pass all the days in a state of fasting or all the nights in a state of worship but yes, we used to offer our (daily) prayers (regularly) and whenever we used to hear the mention of Muhammad (S.A.W.), tears would roll down our cheeks". Mustadrak al-Wasail, vol. 10, pg. 318.

Imam Ali Ibn al-Husain(A.S) used to say: Every Mu'min, whose eyes shed tears upon the killing of Husain Ibn' Ali(A.S.) and his companions, such that the tears roll down his cheeks, Allah shall accommodate him in the elevated rooms of paradise.
Imam Muhammad Baqir (A.S.) said: He who remembers us, or in whose presence, we are remembered, and (as a result) tears flow from his eyes, even though they may be in the measure of a wing of a mosquito, Allah shall construct for him a house in paradise and make the tears a barrier between him and the fire (of hell). Al-Ghadeer, Vol.: 2, pg.: 202
Imam Jafar Sadiq (A.S.) said: He in whose presence we (and our miseries) are mentioned and, as a result, his eyes pour out tears, Allah shall make his face forbidden upon the fire of hell. Bihar al-Anwar, Vol.: 44, Pg., 285.

Imam Jafar Sadiq (A.S.) said (to Masma', one of those who mourned over Imam Husain (A.S.)): May Allah have mercy upon your tears! Do know that you are regarded as being of those who are deeply concerned about us and of those who are happy at our happiness and aggrieved at our sorrow. Do know that you shall witness the presence of my fathers near you at the time of your death. Wasail al-Shia'h, Vol.: 10, Pg.:397
Imam Jafar Sadiq (A.S.) said: There is none who recites poetry about Husain (A.S.) and weeps and makes others weep by means of it, except that Allah makes Paradise incumbent upon him and forgives his sins.
Imam Jafar Sadiq (A.S.) (while sitting on the prayer mat prayed for the mourners and those going for the ziarat of the Ahlul Bayt (A.S.) as follows): O' Lord, have mercy upon those eyes, which have shed tears in compassion for us; and upon those hearts, which have been restless and blistered for us; and upon those wailings, which have.