Hadith #6689 (Sahih Muslim)
Book: The Book Pertaining to the Remembrance of Allah, Supplication, Repentance and Seeking Forgiveness
Narrator(s): al-Aghr Abu Muslim الأغر أبو مسلم
Grade: Sahih

I bear witness to the fact that both Abu Huraira and Abu Sa’id Khudri were present when Allah’s Messenger may peace be upon him) said: The people do not sit but they are surrounded by angels and covered by Mercy, and there descends upon them tranquillity as they remember Allah, and Allah makes a mention of them to those who are near Him. This hadith has been narrated on the authority of Shu’ba with the same chain of transmitters.

Source: https://parallelquran.com/hadith/sahih-muslim-6689/