Signet-Rings (Kitab Al-Khatam)
Dawud :: Book 34 : Hadith 4220
Narrated Arfajah ibn As'ad:
AbdurRahman ibn Tarafah said that his grandfather Arfajah ibn As'ad who had his nose cut off at the battle of al-Kilab got a silver nose, but it developed a stench, so the Prophet (peace_be_upon_him) ordered him to get a gold nose.