31-195 Muhammad ibn Musa ibn al-Motavakil - may God be pleased with him - narrated that Muhammad ibn Yahya al-At’tar quoted on the authority of Muhammad ibn Isa ibn Obayd that Ahmad ibn Abdullah had asked Abal Hassan Ar-Ridha’ (a.s.)
“Where did the sword of God’s Prophet (S) - the ‘Thul-Faqar (Imam Ali’s sword) come from?” The Imam (a.s.) replied, “Gabriel (a.s.) brought it down from the heavens. It had a silver coating. It is with me now.”