What is the status of the congregational dua which is usually made after every Fardh Salaat?

Answer

It is Sunnah to make Dua after Fardh Salaat. After the Fardh of Zuhr, Maghrib and Isha, the dua should be short such as Allaahumma antas salaam……

After the Fardh of Fajr and Asr, the dua may be as long as one desires.

Everyone should make dua individually. It is not necessary to begin and end the dua with the Imaam. The dua should be made silently.

The practice of making congregational dua audibly with the muqtadis sating 'aameen' is not Sunnah.

desanctify the Musjid.