وَعَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ: سَمِعْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَنْهَى عَنِ الْقَزَعِ. قِيلَ لِنَافِعٍ: مَا الْقَزَعُ؟ قَالَ: يُحْلَقُ بعضُ رَأس الصبيِّ وَيتْرك البعضُ وَألْحق بَعضهم التَّفْسِير بِالْحَدِيثِ

Nafi‘ quoted Ibn ‘Umar as saying he had heard the Prophet forbidding qaza'. Nafi' was asked what qaza’ was and replied that it was having part of a boy’s head shaved arid leaving part unshaven. (Bukhari and Muslim.) Some made the explanation a part of the tradition.