Hadith: You will experience favoritism after me, so have patience until you meet me at the Basin

عن أسيد بن حضير وأنس بن مالك رضي الله عنهما أنَّ رجُلاً من الأنصار، قال: يا رسول الله، ألاَ تَستَعمِلُنِي كما استَعمَلت فُلانًا، فقال: «إِنَّكُم سَتَلقَون بَعدِي أَثَرَة فَاصبِرُوا حَتَّى تَلقَونِي على الحَوض».
[صحيح] - [متفق عليه]

Usayd ibn Hudayr and Anas ibn Mālik (may Allah be pleased with both of them) reported: A man from the Ansār said: "O Messenger of Allah, will you not appoint me as you appointed so-and-so?" He replied: "You will experience favoritism after me, so have patience until you meet me at the Basin."
Sahih/Authentic. - [Al-Bukhari and Muslim]

Explanation

A man came to the Prophet (may Allah's peace and blessings be upon him) and asked him to appoint him as a ruler like the rest of those whom he had appointed. So the Prophet (may Allah's peace and blessings be upon him) advised him as well as his Companions to have patience in the face of the future oppression and injustice that would be inflicted by rulers, who will monopolize the wealth and goods of the nation and deprive their subjects thereof. He commanded them to have patience until they meet him at his Basin.