(83) باب حِلْيَةِ السُّيُوفِ
Narrated Abu Umama:
Some people conquered many countries and their swords were decorated neither with gold nor silver, but they were decorated with leather, lead and iron.
Reference: Sahih al-Bukhari 2909
In-book reference: Book 56, Hadith 122
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 157