مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3642
Musnad of Abdullah bin Mas'ood
It was narrated that Zadhan said: 'Abdullah (رضي الله عنه) said: The Messenger of Allah (ﷺ) said: ”Allah has angels who travel about the earth and convey to me the salams of my ummah."
Musnad Ahmad 3666Its isnad is saheeh]