Praying in congregation is highly recommended and the reward of every
Raka’at of it is multiplied by thousands of times. If you are in a
place where congregational prayers are held and your not participating
in it amounts to an insult to the Imam of the Jama’at or the
Mo’meneen, it will then be sinful not to participate in the said
There is another case, when the person does not know how to pray
individually or cannot recite the Qira’at properly, then he must join
an available congregational prayer.