The Prophet ﷺ had informed the people of the martyrdom of Zaid, Jaʿfar and Ibn Rawaha before the news of their death reached. The Prophet ﷺ said, "Zaid took the flag (as the commander of the army) and was martyred, then Jaʿfar took it and was martyred, and then Ibn Rawaha took it and was martyred." At that time the Prophet's eyes were shedding tears. He added, "Then the flag was taken by a Sword amongst the Swords of Allah (i.e. Khalid) and Allah made them (i.e. the Muslims) victorious."
أَنَّ النَّبِيَّ ﷺ نَعَى زَيْدًا وَجَعْفَرًا وَابْنَ رَوَاحَةَ لِلنَّاسِ قَبْلَ أَنْ يَأْتِيَهُمْ خَبَرُهُمْ فَقَالَ أَخَذَ الرَّايَةَ زَيْدٌ فَأُصِيبَ ثُمَّ أَخَذَ جَعْفَرٌ فَأُصِيبَ ثُمَّ أَخَذَ ابْنُ رَوَاحَةَ فَأُصِيبَ وَعَيْنَاهُ تَذْرِفَانِ حَتَّى أَخَذَ الرَّايَةَ سَيْفٌ مِنْ سُيُوفِ اللَّهِ حَتَّى فَتَحَ اللَّهُ عَلَيْهِمْ