Why don't you visit 'Uthman and talk to him? Thereupon he said: Do you think that I have not talked to him but that I have made you hear? By Allah. I have talked to him (about things) concerning me and him and I did not like to divulge those things about which I had to take the initiative and I do not say to my ruler: "You are the best among people," after I heard Messenger of Allah ﷺ as saying: A man will be brought on the Day of Resurrection and thrown in Hell-Fire and his intestines will pour forth in Hell and he will go round along with them, as an ass goes round the mill stone. The denizens of Hell would gather round him and say: O, so and so, what has happened to you? Were you not enjoining us to do what was reputable and forbid us to do what was disreputable? He will say: Of course, it is so; I used to enjoin (upon people) to do what was reputable but did not practise that myself. I had been forbidding people to do what was disreputable, but practised it myself. (Using translation from Muslim 2989a)   

أَنْ لَا أُكَلِّمَهُ إِلَّا سَمْعَكُمْ إِنِّي لَأُكَلِّمُهُ فِيمَا بَيْنِي وَبَيْنَهُ مَا دُونَ أَنْ أَفْتَتِحَ أَمْرًا لَا أُحِبُّ أَنْ أَكُونَ أَوَّلَ مَنْ افْتَتَحَهُ وَاللهِ لَا أَقُولُ لِرَجُلٍ إِنَّكَ خَيْرُ النَّاسِ وَإِنْ كَانَ أَمِيرًا بَعْدَ إِذْ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ قَالُوا وَمَا سَمِعْتَهُ يَقُولُ؟ قَالَ سَمِعْتُهُ يَقُولُ يُجَاءُ بِالرَّجُلِ يَوْمَ الْقِيَامَةِ فَيُلْقَى فِي النَّارِ فَتَنْدَلِقُ بِهِ أَقْتَابُهُ فَيَدُورُ بِهَا فِي النَّارِ كَمَا يَدُورُ الْحِمَارُ بِرَحَاهُ فَيُطِيفُ بِهِ أَهْلُ النَّارِ فَيَقُولُونَ يَا فُلَانُ مَا لَكَ؟ مَا أَصَابَكَ؟ أَلَمْ تَكُنْ تَأْمُرُنَا بِالْمَعْرُوفِ وَتَنْهَانَا عَنِ الْمُنْكَرِ؟ فَقَالَ كُنْتُ آمُرُكُمْ بِالْمَعْرُوفِ وَلَا آتِيهِ وَأَنْهَاكُمْ عَنِ الْمُنْكَرِ وَآتِيهِ  

[Machine] "And I swear by Allah, I would never say to a man, 'Indeed, you are the best of people,' even if he were to be a ruler, after I heard the Messenger of Allah ﷺ saying, 'They will be brought the man on the Day of Judgment, and he will be thrown into the fire, so his entrails will fall out, and he will revolve in the fire as a donkey revolves around a millstone. The people of the Fire will gather around him, and they will say, 'O so-and-so, what is wrong with you? What befell you? Did you not command us with good and forbid us from evil?' He will say, 'I used to command you with good, but I did not do it, and I used to forbid you from evil, but I did it myself.'"  

وَاللهِ لَا أَقُولُ لِرَجُلٍ إِنَّكَ خَيْرُ النَّاسِ وَإِنْ كَانَ عَلَيَّ أَمِيرًا بَعْدَ إِذْ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ قَالُوا وَمَا سَمِعْتَهُ يَقُولُ؟ قَالَ سَمِعْتُهُ يَقُولُ يُجَاءُ بِالرَّجُلِ يَوْمَ الْقِيَامَةِ فَيُلْقَى فِي النَّارِ فَتَنْدَلِقُ أَقْتَابُهُ فَيَدُورُ بِهَا فِي النَّارِ كَمَا يَدُورُ الْحِمَارُ بِرَحَاهُ فَيُطِيفُ بِهِ أَهْلُ النَّارِ فَيَقُولُونَ يَا فُلَانُ مَا لَكَ؟ مَا أَصَابَكَ؟ أَلَمْ تَكُنْ تَأْمُرُنَا بِالْمَعْرُوفِ وَتَنْهَانَا عَنِ الْمُنْكَرِ؟ فَيَقُولُ كُنْتُ آمُرُكُمْ بِالْمَعْرُوفِ وَلَا آتِيهِ وَأَنْهَاكُمْ عَنِ الْمُنْكَرِ وَآتِيهِ  

"يُؤْتَى بِرَجُلٍ كَانَ وَالِيًا فَيُلقَى فِى النَّارِ فَتَنْدَلِقُ أَقْتَابُهُ فَيَدُورُ فِى النَّارِ كَمَا يَدُورُ الْحِمَارُ بِالرَّحَى، فَيَجْتَمِعُ إِلَيْهِ أَهْلُ النَّارِ فَيقُولُونَ: أَلَسْتَ كُنْتَ تَأمُرُنَا بِالْمَعْرُوفِ، وَتَنْهَانَا عَنِ الْمُنْكَرِ؟ قَالَ: كُنْتُ آمُرُكُمْ بِالْمَعْرُوفِ وَلَا آتِيهِ، وَأَنْهَاكُمْ عَنِ الْمُنْكَرِ وَآتِيهِ".