Mishkat al-Masabih
Mishkat al-Masabih 3535
وَعَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «سَيَخْرُجُ قَوْمٌ فِي آخِرِ الزَّمَانِ حُدَّاثُ الْأَسْنَانِ سُفَهَاءُ الْأَحْلَامِ يَقُولُونَ مِنْ خَيْرِ قَوْلِ الْبَرِيَّةِ لَا يُجَاوِزُ إِيمَانُهُمْ حَنَاجِرَهُمْ يَمْرُقُونَ مِنَ الدِّينِ كَمَا يَمْرُقُ السَّهْمُ مِنَ الرَّمِيَّةِ فَأَيْنَمَا لَقِيتُمُوهُمْ فَاقْتُلُوهُمْ فَإِنَّ فِي قَتْلِهِمْ أَجْرًا لمن قَتلهمْ يَوْم الْقِيَامَة»
Ali reported: I heard the Messenger of God say: ‘At the end of time, people will emerge who are young in age and foolish in judgment. They will speak some of the best words of creation, but their faith will not pass beyond their throats. They will leave the religion as an arrow passes through its prey. Wherever you meet them, kill them, for there is a reward on the Day of Resurrection for whoever kills them.’
Translation notes
The English witness adds Bukhari and Muslim as attribution; this is not present in the Arabic text.