مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3617
Musnad of Abdullah bin Mas'ood
Zaid bin Wahb said: I heard Abdullah (رضي الله عنه) say: The Messenger of Allah (ﷺ) said to us: "After I am gone, you will see selfishness (on the part of others) and things that you disapprove of." We said: What do you instruct us to do? He said: "Give them their dues, and ask Allah for what is due to you."
Musnad Ahmad 3641lts isnad is saheeh, al-Bukhari (7052) and Muslim (1843)]