Combing the Hair (Kitab Al-Tarajjul)
Dawud :: Book 33 : Hadith 4149
Narrated AbuUmamah Ilyas ibn Tha'labah:
The Companions of the Apostle of Allah (peace_be_upon_him) mentioned this word before him. The Apostle of Allah (peace_be_upon_him) said: Listen, listen! Wearing old clothes is a part of faith, wearing old clothes is a part of faith.