حَدَّثَنَا مُوسَی بْنُ إِسْمَعِيلَ حَدَّثَنَا حَمَّادٌ حَدَّثَنَا أَيُّوبُ عَنْ نَافِعٍ عَنْ ابْنِ عُمَرَ أَنَّ النَّبِيَّ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ نَهَی عَنْ الْقَزَعِ وَهُوَ أَنْ يُحْلَقَ رَأْسُ الصَّبِيِّ فَتُتْرَکَ لَهُ ذُؤَابَةٌ
سنن ابودوٗد · Hadith 4194
Narrated Abdullah ibn Umar: the Prophet ﷺ forbade qaza' which means that the head of a boy is shaved and a lock is left.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020