Language:
كتاب المغازى
64  
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
(44)
Chapter: The expedition of Mu`tah to the land of Syria
(44)
باب غَزْوَةُ مُوتَةَ مِنْ أَرْضِ الشَّأْمِ
Sahih al-Bukhari 4265

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.‏
Reference : Sahih al-Bukhari 4265
In-book reference : Book 64, Hadith 299
USC-MSA web (English) reference : Vol. 5, Book 59, Hadith 564
  (deprecated numbering scheme)