Question
If there is a masjid next to a ḥusayniyyah, will it be correct to perform congregational prayer in the ḥusayniyyah? Are the rewards of such prayers equal in both places?
Category: The Place of Praying
Answer:
There is no doubt that the merit of performing prayer in a masjid is more than that performed in any other place. However, there is no shar‘ī obstacle to performing congregational prayer in a ḥusayniyyah or in any other place.

Refrence:
Ref: www.leader.ir