عَنْ عُثَيْمِ بْنِ كُلَيْبٍ رَضِيَ اللَّهُ عَنْهُ عَنْ أَبِيهِ رَضِيَ اللَّهُ عَنْهُ عَنْ جَدِّهِ رَضِيَ اللَّهُ عَنْهُ أَنَّهُ جَاءَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فَقَالَ قَدْ أَسْلَمْتُ فَقَالَ أَلْقِ عَنْكَ شَعْرَ الْكُفْرِ يَقُولُ احْلِقْ قَالَ وَأَخْبَرَنِي آخَرُ مَعَهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ لِآخَرَ أَلْقِ عَنْكَ شَعَرَ الْكُفْرِ وَاخْتَتِنْ
Abu Kulayb Juhani (may Allah be pleased with him) narrates that I came to the Noble Prophet (peace and blessings be upon him) and I said: I have become a Muslim. The Prophet (peace and blessings be upon him) said: Then cast off the hair of disbelief. Another narrator stated that the Prophet (peace and blessings be upon him) said: Shave the hair of disbelief. Another man informed me that the Noble Prophet (peace and blessings be upon him) said to another person: Remove the hair of disbelief and perform circumcision.