Model Behavior of the Prophet (Kitab Al-Sunnah)
42/31. Chapter:
Fighting Against The Khawarij
Sunan Abi Dawud
حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَحْوَهُ قَالَ : " سِيمَاهُمُ التَّحْلِيقُ وَالتَّسْبِيدُ، فَإِذَا رَأَيْتُمُوهُمْ فَأَنِيمُوهُمْ " . قَالَ أَبُو دَاوُدَ : التَّسْبِيدُ اسْتِئْصَالُ الشَّعْرِ .
The tradition mentioned above has also been transmitted by Anas through a different chain of narrators in a similar manner. This version adds; Their sign is shaving the head and eliminating the hair. If you see them, kill them. Abu Dawud said: Tasmid means uprooting the hair.
Reference : Sunan Abi Dawud 4766In-book reference : Book 42, Hadith 171English translation : Book 41, Hadith 4748