(7) باب التَّرَجُّلِ غِبًّا
It was narrated from Al-Hasan that:
The Prophet [SAW] forbade coming one's hair except every other day.
Reference: Sunan an-Nasa'i 5056
In-book reference: Book 48, Hadith 17
English translation: Vol. 6, Book 48, Hadith 5059