Sunan an-Nasa'i, Volume 6, Book 48, Hadith 5232 (DarusSalam) ⓘ
It was narrated that Ibn 'Umar said: "The Messenger of Allah [SAW] forbade Al-Qaza' (shaving part of the head and leaving part)."
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا مُحَمَّدُ بْنُ بِشْرٍ، قَالَ حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ عُمَرَ بْنِ نَافِعٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنِ الْقَزَعِ .
also referenced under: Hadith 5230 (Reference) & Book 48, Hadith 191 (In-Book)