Shama-il Tirmidhi Chapter 4, Hadith Number 5 (35).

Chapter 4. The Combing Of The Hair Of Rasoolullah

Hazrat Humayd bin Abdurrahman (Radiallahu anhu) relates form a Sahabi that Sayyidina Rasulullah (Sallallahu alaihe wasallam) combed his hair occasionally.

Related