مُسْنَدُ أَحْمَدَ
Musnad Ahmad 4334
Musnad of Abdullah bin Mas'ood
It was narrated that Ibn Mas'ood said: The Messenger of Allah (ﷺ) said: "There will be rulers after me who will say what they do not do and will do what they are not enjoined to do.”
Musnad Ahmad 4363Its isnad is qawi. Muslim (50)]