Narrated Ibn 'Abbas (may Allah be pleased with them):

The Prophet ﷺ said, "Whoever notices something which he dislikes done by his ruler, then he should be patient, for whoever becomes separate from the company of the Muslims even for a span and then dies, he will die as those who died in the Pre-lslamic period of Ignorance (as rebellious sinners). (Fath-Al-Bari page 112, Vol. 16)

حَدَّثَنَا أَبُو النُّعْمَانِ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنِ الْجَعْدِ أَبِي عُثْمَانَ، حَدَّثَنِي أَبُو رَجَاءٍ الْعُطَارِدِيُّ، قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ ـ رضى الله عنهما ـ عَنِ النَّبِيِّ ﷺ قَالَ
" مَنْ رَأَى مِنْ أَمِيرِهِ شَيْئًا يَكْرَهُهُ فَلْيَصْبِرْ عَلَيْهِ، فَإِنَّهُ مَنْ فَارَقَ الْجَمَاعَةَ شِبْرًا فَمَاتَ، إِلاَّ مَاتَ مِيتَةً جَاهِلِيَّةً ".