Musannaf Ibn Abi Shaybah 31449 — Book of the Remembrance of Allah

Sayyiduna Abu Hurayrah and Sayyiduna Abu Sa'id (may Allah be pleased with them both) bear witness regarding the Prophet (peace and blessings be upon him) that he (peace and blessings be upon him) said: "No group of Muslims sits in a gathering remembering Allah without the angels surrounding them, mercy covering them, and tranquility descending upon them, and Allah mentions them in the gathering of the angels."