Nabi (sallallahu ‘alaihi wasallam) said: “When any group of people rise from a gathering wherein they did not engage in the remembrance of Allah Ta‘ala, they stand up from the likeness of the carcass of a donkey, and it will be a source of remorse for them.” (Sunan Abi Dawood #4855)
The existence and continuity of this entire world depends on the name of Allah Ta‘ala. As long as there is a single Believer taking the name of Allah Ta‘ala, this entire world will continue to exist. With the passing away of the last Believer, this entire world will come to an end.
In the same way, the blessed name of Allah Ta‘ala brings life to a gathering and causes the gathering to become a means of reward for us. On the contrary, a gathering which is devoid of the remembrance of Allah Ta‘ala is a ‘dead’ gathering which, instead of earning us reward, becomes a means of grief and regret for us in the Hereafter.