Sulayman bin Habib (may Allah have mercy on him) said: I heard Abu Umamah (may Allah be pleased with him) say: By Allah, a people achieved many conquests, and the ornamentation of their swords was not of gold and silver; rather, the ornamentation of their swords was of camel sinew, lead and iron.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7579