Sahih al-Bukhari 3068
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.
قَالَ ابْنُ نُمَيْرٍ حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ ذَهَبَ فَرَسٌ لَهُ، فَأَخَذَهُ الْعَدُوُّ، فَظَهَرَ عَلَيْهِ الْمُسْلِمُونَ فَرُدَّ عَلَيْهِ فِي زَمَنِ رَسُولِ اللَّهِ ﷺ، وَأَبَقَ عَبْدٌ لَهُ فَلَحِقَ بِالرُّومِ، فَظَهَرَ عَلَيْهِمُ الْمُسْلِمُونَ، فَرَدَّهُ عَلَيْهِ خَالِدُ بْنُ الْوَلِيدِ بَعْدَ النَّبِيِّ ﷺ.
Classification
Sahih (Authentic)
References
Sahih al-Bukhari 3068
Sahih al-Bukhari Vol. 4, Book of Fighting for the Cause of Allah (al-Jihaad), Hadith 302