Surely, there exists in the hearts of the Mu' mineen, with respect to the martyrdom of Husayn, a heat that never subsides.
Prophet mohammed (asws) has said;
O Fatimah! (asws) Every eye shall be weeping on the Day of Judgment except the eye which has shed tears over the tragedy of Husayn (asws) for surely, that eye shall be laughing and shall be given the glad tidings of the bounties and comforts of Paradise.
Imam Hussain (asws) has said;
Every Mu'min, whose eyes shed tears upon the martyrdom of Husayn ibn' Ali (asws) and his companions, such that the tears roll down his cheeks, God shall accommodate him in the elevated rooms of paradise.
Imam Ali - Ameer-Ul-Momineen (asws) has said;
(Once when he happened to pass by Karbala), Isa (Jesus) sat down and began to weep. His disciples who were observing him, followed suit and began weeping too, but not comprehending the reason for this behaviour, they asked him: "O' Spirit of God! What is it that makes you weep?" Isa (Jesus) said: "Do you know what land this is?" The disciples replied: "No." He then said: "This is the land on which the son of the Prophet Muhammad (asws) shall be martyred.
SEND LANAT ON
Lanat on shimr malaon (la) because he martyred imam Hussain (asws) on the orders of yazeed ibne muawiya ibne abu sufiyan (l.a)