What did Khalid bin Al-Walid have left in his hand after the battle of Mu'tah, other than his Yemenite sword? (peace be upon him)
 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.