What extraordinary acts of generosity did Khalid bin Al-Walid show the Prophet Muhammad (saw) and Ibn `Umar?
 Narrated Nafi`:                     Once a slave of Ibn `Umar fled and joined the Byzantine. Khalid bin Al-Walid got him back and returned him to `Abdullah (bin `Umar). Once a horse of Ibn `Umar also ran away and followed the Byzantines, and he (i.e. Khalid) got it back and returned it to `Abdullah.