Second Jamaat in a Masjid?

In the Name of Allah, the Most Gracious, the Most Merciful.

As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh. 

In a Masjid where five daily prayers are taking place with Adhan and Iqāmah, it is Makruh Tahrimi (prohibitively disliked) to conduct a second congregation, since it decreases the importance of the official congregation.  

If you wish to pray in congregation, it may be conduct outside the Masjid area. Otherwise, the Salāh should be preformed individually. [1]

And Allah Ta’āla Knows Best

Mufti Zaid Mohammed Shelia,
Student Darul Iftaa

USA 

Checked and Approved by,
Mufti Ebrahim Desai.
www.daruliftaa.net