Sunan an-Nasa'i 5230
سنن النسائي#5230SahihIt was narrated that Ibn 'Umar said:"The Messenger of Allah [SAW] forbade Al-Qaza' (shaving part of the head and leaving part)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 48:191