Sunan an-Nasai Book 39, Hadith 4208

أَخْبَرَنَا هَارُونُ بْنُ إِسْحَاقَ، قَالَ حَدَّثَنَا مُحَمَّدٌ، - يَعْنِي ابْنَ عَبْدِ الْوَهَّابِ - قَالَ حَدَّثَنَا مِسْعَرٌ، عَنْ أَبِي حَصِينٍ، عَنِ الشَّعْبِيِّ، عَنْ عَاصِمٍ الْعَدَوِيِّ، عَنْ كَعْبِ بْنِ عُجْرَةَ، قَالَ خَرَجَ إِلَيْنَا رَسُولُ اللَّهِ صلى الله عليه وسلم وَنَحْنُ تِسْعَةٌ خَمْسَةٌ وَأَرْبَعَةٌ أَحَدُ الْعَدَدَيْنِ مِنَ الْعَرَبِ وَالآخَرُ مِنَ الْعَجَمِ فَقَالَ ‏ "‏ اسْمَعُوا هَلْ سَمِعْتُمْ أَنَّهُ سَتَكُونُ بَعْدِي أُمَرَاءُ مَنْ دَخَلَ عَلَيْهِمْ فَصَدَّقَهُمْ بِكَذِبِهِمْ وَأَعَانَهُمْ عَلَى ظُلْمِهِمْ فَلَيْسَ مِنِّي وَلَسْتُ مِنْهُ وَلَيْسَ يَرِدُ عَلَىَّ الْحَوْضَ وَمَنْ لَمْ يَدْخُلْ عَلَيْهِمْ وَلَمْ يُصَدِّقْهُمْ بِكَذِبِهِمْ وَلَمْ يُعِنْهُمْ عَلَى ظُلْمِهِمْ فَهُوَ مِنِّي وَأَنَا مِنْهُ وَسَيَرِدُ عَلَىَّ الْحَوْضَ ‏"‏ ‏.‏

It was narrated that Kab bin Ujrah said:"The Messenger of Allah came out to us and we were nine, fie and four, some 'Arabs and some non- 'Arabs. He said: 'Listen. Have you heard that after me there will be rulers, whoever enters upon them and believes their lies and help them in their wrongdoing is not of me, and I am not of him, and he will not come to me at the Cistern? Whoever does not enter upon them or belive their lies or help them in their wrongdoing is of me and I am of him, and he will come to me at the Cistern