Abu Huraira (RA) narrated Abu Saeed Khudri (RA) said that Rasool Allah (SAW) said, “Whenever a Jama'at (a group of people) sits for Zikr of Allah, the angels surround it. Blessing covers that Jama'at. And peace and calm descends on them. And Allah mentions them to the angels present in HIS court. (Muslim)