Language:
كتاب الجنائز
23  
Funerals (Al-Janaa'iz)
(4)
Chapter: A man who informs the relatives of the deceased person (of his death) by himself
(4)
باب الرَّجُلِ يَنْعَى إِلَى أَهْلِ الْمَيِّتِ بِنَفْسِهِ
Sahih al-Bukhari 1246

Narrated Anas bin Malik:

The Prophet (ﷺ) said, "Zaid took over the flag and was martyred. Then it was taken by Jafar who was martyred as well. Then `Abdullah bin Rawaha took the flag but he too was martyred and at that time the eyes of Allah's Messenger (ﷺ) were full of tears. Then Khalid bin Al-Walid took the flag without being nominated as a chief (before hand) and was blessed with victory."

حَدَّثَنَا أَبُو مَعْمَرٍ، حَدَّثَنَا عَبْدُ الْوَارِثِ، حَدَّثَنَا أَيُّوبُ، عَنْ حُمَيْدِ بْنِ هِلاَلٍ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏ "‏ أَخَذَ الرَّايَةَ زَيْدٌ فَأُصِيبَ، ثُمَّ أَخَذَهَا جَعْفَرٌ فَأُصِيبَ، ثُمَّ أَخَذَهَا عَبْدُ اللَّهِ بْنُ رَوَاحَةَ فَأُصِيبَ ـ وَإِنَّ عَيْنَىْ رَسُولِ اللَّهِ صلى الله عليه وسلم لَتَذْرِفَانِ ـ ثُمَّ أَخَذَهَا خَالِدُ بْنُ الْوَلِيدِ مِنْ غَيْرِ إِمْرَةٍ فَفُتِحَ لَهُ ‏"
Reference : Sahih al-Bukhari 1246
In-book reference : Book 23, Hadith 9
USC-MSA web (English) reference : Vol. 2, Book 23, Hadith 338
  (deprecated numbering scheme)