Sahih al-Bukhari 3757Book 62, Hadith 103
حَدَّثَنَا أَحْمَدُ بْنُ وَاقِدٍ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ أَيُّوبَ، عَنْ حُمَيْدِ بْنِ هِلاَلٍ، عَنْ أَنَسٍ ـ رضى الله عنه أَنَّ النَّبِيَّ صلى الله عليه وسلم نَعَى زَيْدًا وَجَعْفَرًا وَابْنَ رَوَاحَةَ لِلنَّاسِ قَبْلَ أَنْ يَأْتِيَهُمْ خَبَرُهُمْ، فَقَالَ " أَخَذَ الرَّايَةَ زَيْدٌ فَأُصِيبَ، ثُمَّ أَخَذَ جَعْفَرٌ فَأُصِيبَ، ثُمَّ أَخَذَ ابْنُ رَوَاحَةَ فَأُصِيبَ ـ وَعَيْنَاهُ تَذْرِفَانِ ـ حَتَّى أَخَذَ سَيْفٌ مِنْ سُيُوفِ اللَّهِ حَتَّى فَتَحَ اللَّهُ عَلَيْهِمْ ".
The Prophet (ﷺ) had informed the people about the death of Zaid, Ja`far and Ibn Rawaha before the news of their death reached them. He said with his eyes flowing with tears, "Zaid took the flag and was martyred; then Ja`far took the flag and was martyred, and then Ibn Rawaha took the flag and was martyred. Finally the flag was taken by one of Allah's Swords (i.e. Khalid bin Al-Walid) and Allah gave them (i.e. the Muslims) victory."