مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3727
Musnad of Abdullah bin Mas'ood
It was narrated that Khalid bin Rib'i al-Asadi said: I heard Ibn Mas'ood (رضي الله عنه) say: I heard The Messenger of Allah (ﷺ) say: "Your companion is the close friend of Allah, may He be exalted and glorified.”
Musnad Ahmad 3750Saheeh because of corroborating evidence; this is a repeat o