مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3810
Musnad of Abdullah bin Mas'ood
It was narrated from 'Abdur-Rahman bin Yazeed that Abdullah told them that The Prophet of Allah (ﷺ) said: “I give you permission to raise the curtain and listen to my private conversation until I telt you not to."
Musnad Ahmad 3833Its isnad is saheeh, Muslim (2169)]