What is the evidence for distinguishing between a mosque that has a regular imam, in which a second congregation is prohibited, and other mosques that do not have a regular imam, in which it is not prohibited?

The questioner : If someone were to ask, “Why did you distinguish between a mosque that has a regular imam or a regular mu'adhdhin and mosques that do not have a regular imam or a regular mu'adhdhin? And what is the evidence for your distinction that the second congregation is not established?”

The Shaykh : This is mentioned in the very book of al-Shafi'i.

The questioner : Yes.

The Shaykh : As for the mosque that has a regular imam and a regular mu'adhdhin, meaning it has a congregation, whereas the mosques that do not have a regular imam or a regular mu'adhdhin do not have a congregation, repeating the congregation there brings people together and does not divide them, unlike repeating the congregation in a mosque that has a regular imam and a regular mu'adhdhin, which divides and does not bring people together. There is a great difference between the two, and this is from the fiqh of Imam al-Shafi'i.