The Rewards of Mourning for Imam Husain (A.S)

Imam Ali Reza (A.S.) said: The one for whom the day of A'shura is a day of tragedy, grief and weeping, Allah The Mighty, The Glorious, shall make the Day of Judgment, a day of joy and happiness for him. Bihar al-Anwar, vol,: 44, pg: 284
Imam Ali Reza (A.S.) said: With the advent of the month of Muharram, my father Imam Musa Kazim (A.S.) would never be seen laughing; gloom and sadness would overcome him for (the first) ten days of the month; and when the tenth day of the month would dawn, it would be a day of tragedy, grief and weeping for him. Amaali Saduq, pg,:111
Imam Ali Reza (A.S.) said: He who sits in a gathering in which our affairs (and our path and aims) are discussed and revived, his heart shall not die on the day (Day of Judgment) when hearts shall die (of fear). Bihar al-Anwar Vol.: 44, pg.:278
Imam Reza (A.S.) said (to one of his companions): If you desire that for you be the reward equivalent to that of those martyred along with Husain (A.S.), then whenever you remember him say: 'Oh! Would that I had been with them! A great achievement would I have achieved'.
Imam Ali Reza (A.S.) said: Those who weep should weep over the likes of Hussain (A.S.) for surely, weeping over him does away with one's great sins. Bihar al-Anwar, Vol.: 44/ pg.: 284.
Imam Ali Reza (A.S.) said: O' Son of Shabib! Should you weep for Hussain (A.S.) in the measure that tears roll down your cheeks, Allah would forgive all the sins committed by you, whether they be the great sins or the small sins and whether they be meagre or immense. Amaali al-Saduq, pg.:112.
Imam Ali Reza (A.S.) said (to Ibn Shabib): O' Son of Shabib! If it makes you happy (and you desire) to be with us in the elevated ranks of paradise, then be sad in our grief and happy at our happiness. Wasaail al-Shia'h, Vol. 14, pg. 502
Imam Ali Reza (A.S.) said: One who refrains from seeking his (worldly) desires on the day of Ashura, Allah shall grant him his desires of this world and the hereafter. Wasail al-Shia'h, vol. 14,pg.504.
Imam Ali Reza (A.S.) said (to De'bil, a poet sincereiy devoted to the Ahlul bayt): I desire that you recite for me poetry, for surely, these days (of the month of Muharram) are the days of grief and sorrow, which have passed over us, Ahlul Bayt. Mustadrak al-Wasail, vol. 10, pg. 386