[Machine] The Messenger of Allah ﷺ said, "Verily, there will emerge flags from the east for the Bani Abbaas, the first of which will be destroyed and the last of which will be destroyed. Do not support them, as Allah will not help those who walk under their banner. Allah will admit them to Hellfire on the Day of Resurrection. Verily, they are the worst among Allah's creation, and their followers are also the worst among Allah's creation. They claim to be from me, but I am innocent of them, and they are innocent of me. Their sign is that they grow their hair long and wear black clothes. Do not sit with them in gatherings, do not enter into business transactions with them, do not guide them on the path, and do not offer them water. The people of the heavens are troubled by their distinctive way of performing takbeer (saying Allah akbar)."  

قَالَ رَسُولُ اللهِ ﷺ «إِنَّهَا سَتَخْرُجُ رَايَاتٌ مِنَ الْمَشْرِقِ لِبَنِي الْعَبَّاسِ أَوَّلُهَا مَثْبُورٌ وَآخِرُهَا مَثْبُورٌ لَا تَنْصُرُوهُمْ لَا نَصَرَهُمُ اللهُ مَنْ مَشَى تَحْتَ رَايَةٍ مِنْ رَايَاتِهِمْ أَدْخَلَهُ اللهُ يَوْمَ الْقِيَامَةِ جَهَنَّمَ أَلَا أَنَّهُمْ شِرَارُ خَلْقِ اللهُ وَأَتْبَاعُهُمْ شِرَارُ خَلْقِ اللهِ يَزْعُمُونَ أَنَّهُمْ مِنِّي أَلَا إِنِّي مِنْهُمْ بَرِيءٌ وَهُمْ مِنِّي بَرَاءٌ عَلَامَتُهُمْ يُطِيلُونَ الشُّعُورَ وَيَلْبَسُونَ السَّوَادَ فَلَا تُجَالِسُوهُمْ فِي الْمَلَأِ وَلَا تُبَايِعُوهُمْ فِي الْأَسْوَاقِ وَلَا تُهْدُوهُمُ الطَّرِيقَ وَلَا تُسْقُوهُمُ الْمَاءَ يَتَأَذَّى بِتَكْبِيرِهِمْ أَهْلُ السَّمَاءِ»