What is the ruling on a second congregational prayer in the same mosque after the first congregational prayer has finished, and what is the story of the Companion Mu'adh ibn Jabal concerning the second congregation?

The performance of a second congregational prayer in a mosque varies depending on the mosque's situation. If it does not have a regular Imam, it is not disliked, and this is a matter of consensus. However, if it has a regular Imam and is frequented, the majority of scholars consider it disliked. Ahmad, Ishaq, and Dawud, however, held the view that it is not disliked, and this is the more preponderant opinion. The story of Mu'adh (may Allah be pleased with him), where he prayed with the Prophet (peace be upon him) and then went to lead his people in prayer, is not related to the issue of a second congregation in the same mosque; rather, it pertains to repeating the same prayer twice.