Musannaf Ibn Abi Shaybah 37443 — The words of Abdullah bin Amr

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with him) that he said: "There is no group that gathers and remembers Allah except that Allah Almighty remembers them in a group more honoured and more noble than their own. And there is no group that disperses without having remembered Allah except that this gathering will be a cause of regret for them on the Day of Resurrection."