ما مِن أحد قال في الحُسين شِعراً فبكى وأبكى بِه إلاَّ أوجب الله له الجنَّة وغفر لهُ.

There is none who recites poetry about Husayn (PBUH) and weeps and makes others weep by means of it, except that Allah makes Paradise incumbent upon him and forgives his sins.

Rijal al‑Shaikh al‑ Tusi pg. 189