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 4266

Narrated Khalid bin Al-Walid:

On the day of Mu'tah, nine swords were broken in my hand and only a Yemenite sword of mine remained in my hand.

حَدَّثَنِي مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا يَحْيَى، عَنْ إِسْمَاعِيلَ، قَالَ حَدَّثَنِي قَيْسٌ، قَالَ سَمِعْتُ خَالِدَ بْنَ الْوَلِيدِ، يَقُولُ لَقَدْ دُقَّ فِي يَدِي يَوْمَ مُوتَةَ تِسْعَةُ أَسْيَافٍ، وَصَبَرَتْ فِي يَدِي صَفِيحَةٌ لِي يَمَانِيَةٌ‏.‏
Reference : Sahih al-Bukhari 4266
In-book reference : Book 64, Hadith 300
USC-MSA web (English) reference : Vol. 5, Book 59, Hadith 565
  (deprecated numbering scheme)