Abu Dawud Book 28, Hadith Number 4181.Abu Dawud Book 28. Combing The Hair Chapter : Lock of hair. Narated By Ibn Umar : The Apostle of Allah (PBUH) forbade qaza’ Qaza’ means having part of the boy’s head shaved and leaving part unshaven. Related Previous Post Abu Dawud Book 28, Hadith Number 4182. Next Post Abu Dawud Book 28, Hadith Number 4180.