Question 050: What are we supposed to say to each other during Muharram, it’s a time of mourning?
Answer 050: Imam Muhammad Baqir (as) was asked if we want to condole others in the month of Muharram, especially on the Day of Ashura, how and what do we say? The Imam replied, “Say: May Allah (SWT) increase our rewards of our mourning for Imam Hussain (as) and let us be one of the companions of Imam Mahdi (ajtf) to take our revenge against the killers of Imam Hussain (a.s)”.
(A’adhamallahu ujurana wa ujurakum bi musaabina bil Hussain alayhis salaam)
The Arabic Version is:
“عَظَّمَ اللَّهُ أُجُورَنَا بِمُصَابِنَا بِالْحُسَيْنِ ع وَ جَعَلَنَا وَ إِيَّاكُمْ مِنَ الطَّالِبِينَ بِثَأْرِهِ مَعَ وَلِيِّهِ الْإِمَامِ الْمَهْدِيِّ مِنْ آلِ مُحَمَّدٍ ص”
It is noteworthy that sacred months which are known as Ḥarām months are Dhu al-Qidah, Dhu al-Hijjah, Muharram-ul-haram and Rajab-al-Murajjab. The reason we say Muharram-ul-haram is because fighting in this month is forbidden.[1]
For further information in this regards, please refer to the following answer:
Index: Qama Zani / How the Infallible Imams (pbuth) mourned for Imam Hussain (as), answer 507.
Index: Mourning for Imam Hussain (as) while you are grieving, answer 047.
Index: Lamentation: Normal mourning for Imam Hussain (as), answer 049.
[1] . Kamil Al-Ziyarat, al-Nass, Pg. 175; al-Misbah al-Kaf’ami (Jannatul Aman al-Waqiyah), Pg. 482; Wasael al-Shia, Vol. 14, Pg. 509, H 19709; Biharul Anwar, Vol. 98, chapter 24 (how to visit the Holy Shrine of Imam Hussain on the Day of Ashura.); Mustadrak al-Wasael wa Mustanbit al-Masael, Vol. 10, Pg. 316, Chapter 49 (recommendation of crying over martyrdom of Imam Hussain (as)).