SHAFAQNA – The Grand Ayatollah Makarem answered a question about Muharram gatherings.
Question: Is it allowed to organize gatherings (mourning ceremonies) just by having Maddahi and without preaching and preachers?
The Grand Ayatollah Makarem: Must seriously avoid this which endangers the holy aims of Imam Hussain (AS). In addition, people learn about bases and details of the religion and its valuable merits from preachers in these gatherings which sometimes is not possible for people to do so in other gatherings.
Source: PERSIAN SHAFAQNA