(4) باب النَّهْىِ عَنْ حَلْقِ الْمَرْأَةِ، رَأْسَهَا
It was narrated from 'Ali:
"The Messenger of Allah [SAW] forbade women to shave their heads."
Reference: Sunan an-Nasa'i 5049
In-book reference: Book 48, Hadith 10
English translation: Vol. 6, Book 48, Hadith 5052