#imamhussain
Imam Sajjad (a.s.) said: Any believer who weeps over Imam Husain (a.s.) with a single tear will be rewarded by Allah for it; he will be made to dwell in rooms in Paradise for long ages.
Kaameluz Ziaraat, Chap. 32, Tradition no. 1
Imam Sadiq (a.s.) said: The sins of whoever weeps, even as less as the wing of a mosquito, when we are mentioned before him will be forgiven, even if his sins are greater than the foam of the ocean.
Kaameluz Ziaraat, Chap. 32, Tradition no. 8