Imam Raza (as) said, "With the advent of the month of Muharram, my father Imam Kadhim (as) 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 and He would say, "This is the day on which Imam Husain (as) was killed".