Dr. Muzammil H. Siddiqi, President of the Fiqh Council of North America, states: “Every religion has its own places of worship, and they should be left to the people of those religions. Outsiders should not go there unless there is a reason such as interfaith program or a special occasion such as the marriage or funeral of relative or friend, etc.
When one visits other people’s places of worship, we should be respectful but should not do any thing that is forbidden in Islam. Islam does not allow bowing or kneeling before idols, statues or priests. As muslims we must avoid those things. If there is a prayer service in which they pray to someone other than God, then a muslim should remain silent and should not sing those prayers or songs.
As Muslims we respect other people and their freedom of worship; but we do not compromise our faith just to show our courtesy.”