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

The one for whom the day
of A'ashura 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