It is narrated from Sayyiduna Marzuq al-Sayqal (may Allah be pleased with him) that he polished the sword of the Messenger of Allah (peace and blessings be upon him), "Dhu al-Faqar", whose pommel was of silver, with rings in its sheath, and a silver knob in its middle.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17969