Sunan an-Nasa'i, Book 48, Hadith 336 (In-Book) ⓘ
It was narrated that Sa'eed bin Abi Al-Hasan said: "The pommel of the sword of the Messenger of Allah [SAW] was of silver."
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا يَزِيدُ، - وَهُوَ ابْنُ زُرَيْعٍ - عَنْ هِشَامٍ، عَنْ قَتَادَةَ، عَنْ سَعِيدِ بْنِ أَبِي الْحَسَنِ، قَالَ كَانَتْ قَبِيعَةُ سَيْفِ رَسُولِ اللَّهِ صلى الله عليه وسلم مِنْ فِضَّةٍ .
also referenced under: Hadith 5375 (Reference) & Volume 6, Book 48, Hadith 5377 (DarusSalam)