(14) باب فِي الذُّؤَابَةِ
Narrated Abdullah ibn Umar:
the Prophet (ﷺ) forbade qaza' which means that the head of a boy is shaved and a lock is left. (ID)
Reference (ID): Sunan Abi Dawud 4194 (ID)
In-book reference (ID): Book 35, Hadith 36 (ID)
English translation (ID): Book 34, Hadith 4182 (ID)