(7) باب التَّرَجُّلِ غِبًّا
It was narrated that Al-Hasan and Muhammad said:
"Combing one's hair (should be done) every other day." (ID)
Reference (ID): Sunan an-Nasa'i 5057 (ID)
In-book reference (ID): Book 48, Hadith 18 (ID)
English translation (ID): Vol. 6, Book 48, Hadith 5060 (ID)