What is the ruling on the second congregational prayer in the mosque (if they are travelers)?

The questioner : Shaykh, is it prescribed for a group of travelers to combine their prayer after the first congregation in a mosque that has a regular imam?

The Shaykh : No, it is not permissible except in the case where there are no people in the mosque, such that they do not think that if they see them praying, these people are forming a second congregation. So if the mosque is empty, they should pray; otherwise, they should not.