Sahih al-Bukhari, Volume 5, Book 59, Hadith 564 (USC-MSA) ⓘ
Narrated Khalid bin Al-Walid: On the day (of the battle of) Mu'tah, nine swords were broken in my hand, and nothing was left in my hand except a Yemenite sword of mine.
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا سُفْيَانُ، عَنْ إِسْمَاعِيلَ، عَنْ قَيْسِ بْنِ أَبِي حَازِمٍ، قَالَ سَمِعْتُ خَالِدَ بْنَ الْوَلِيدِ، يَقُولُ لَقَدِ انْقَطَعَتْ فِي يَدِي يَوْمَ مُوتَةَ تِسْعَةُ أَسْيَافٍ، فَمَا بَقِيَ فِي يَدِي إِلاَّ صَفِيحَةٌ يَمَانِيَةٌ.
also referenced under: Book 64, Hadith 299 (In-Book) & Hadith 4265 (DarusSalam)