Arabic (Original)
حَدَّثَنَا عَلِيُّ بْنُ إِسْحَاقَ قَالَ أَخْبَرَنَا عَبْدُ اللَّهِ وَعَتَّابٌ قَالَ حَدَّثَنَا عَبْدُ اللَّهِ قَالَ أَخْبَرَنَا يُونُسُ عَنِ الزُّهْرِيِّ قَالَ حَدَّثَنِي عُبَيْدُ اللَّهِ عَنْ ابْنِ عَبَّاسٍ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يَسْدِلُ شَعْرَهُ وَكَانَ الْمُشْرِكُونَ يَفْرُقُونَ رُءُوسَهُمْ وَكَانَ أَهْلُ الْكِتَابِ يَسْدِلُونَ شُعُورَهُمْ وَكَانَ يُحِبُّ مُوَافَقَةَ أَهْلِ الْكِتَابِ فِيمَا لَمْ يُؤْمَرْ فِيهِ بِشَيْءٍ ثُمَّ فَرَقَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَأْسَهُ.
English Translation
The Messenger of Allah (peace be upon him) used to let his hair hang down (sadl), and the polytheists used to part their hair. The People of the Book used to let their hair hang down, and he (the Prophet) liked to follow the People of the Book in matters about which he had received no command. Then the Messenger of Allah (peace be upon him) began parting his hair.