[Machine] That Umar ibn Abdul Aziz wrote to some of his employees, "I advise you to fear Allah and be economical in His affairs, and to follow the Sunnah of His Messenger ﷺ and to abandon what the innovators have introduced after it has been established as his Sunnah. And be aware that no one invents a new innovation except that it has evidence supporting it, and others were misguided in it. So it is upon you to adhere to the Sunnah, for indeed, it is your protection with the permission of Allah. And know that whoever follows the Sunnah is aware of the errors, mistakes, depths, and foolishness that exist in its opposition. Indeed, those who preceded in knowledge stopped and those with discerning insight ceased probing, and they were the strongest in research if they had researched."  

أَنَّ عُمَرَ بْنَ عَبْدِ الْعَزِيزِ كَتَبَ إِلَى بَعْضِ عُمَّالِهِ «أُوصِيكَ بِتَقْوَى اللَّهِ ﷻ وَالِاقْتِصَادِ فِي أَمْرِهِ وَاتِّبَاعِ سُنَّةِ رَسُولِهِ ﷺ وَتَرْكِ مَا أَحْدَثَ الْمُحْدِثُونَ بَعْدَهُ مِمَّا قَدْ جَرَتْ سُنَّتُهُ وَكُفُوا مُؤْنَتَهُ وَاعْلَمْ أَنَّهُ لَمْ يَبْتَدِعْ إِنْسَانٌ بِدْعَةً إِلَّا قَدْ مَضَى فِيهَا مَا هُوَ دَلِيلٌ عَلَيْهَا وَغَيْرُهُ فِيهَا فَعَلَيْكُمْ بِلُزُومِ السُّنَّةِ فَإِنَّهَا لَكَ بِإِذْنِ اللَّهِ عِصْمَةٌ وَاعْلَمْ أَنَّ مَنْ سَنَّ السُّنَنَ قَدْ عَلِمَ مَا فِي خِلَافَهَا مِنَ الْخَطَإِ وَالزَّلَلِ وَالتَّعَمُّقِ وَالْحُمْقِ فَإِنَّ السَّابِقِينَ عَنْ عِلْمٍ وَقَفُوا وَبِبَصَرٍ نَاقِدٍ كَفُّوا وَكَانُوا هُمْ أَقْوَى عَلَى الْبَحْثِ لَوْ بَحَثُوا»