Sahih al-Bukhari 56:16
Narrated Anas bin Malik:
The Prophet (ﷺ) delivered a sermon and said, "Zaid took the flag and was martyred, and then Ja`far took the flag and was martyred, and then `Abdullah bin Rawaha took the flag and was martyred too, and then Khalid bin Al-Walid took the flag though he was not appointed as a commander and Allah made him victorious." The Prophet (ﷺ) further added, "It would not please us to have them with us." Aiyub, a sub-narrator, added, "Or the Prophet, shedding tears, said, 'It would not please them to be with us.'"
Reference
Sahih al-Bukhari 56:16
In-book reference
Book 56, Hadith 16
Arabic Text
حَدَّثَنَا يُوسُفُ بْنُ يَعْقُوبَ الصَّفَّارُ، حَدَّثَنَا إِسْمَاعِيلُ ابْنُ عُلَيَّةَ، عَنْ أَيُّوبَ، عَنْ حُمَيْدِ بْنِ هِلاَلٍ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ قَالَ خَطَبَ النَّبِيُّ صلى الله عليه وسلم فَقَالَ " أَخَذَ الرَّايَةَ زَيْدٌ فَأُصِيبَ، ثُمَّ أَخَذَهَا جَعْفَرٌ فَأُصِيبَ، ثُمَّ أَخَذَهَا عَبْدُ اللَّهِ بْنُ رَوَاحَةَ فَأُصِيبَ، ثُمَّ أَخَذَهَا خَالِدُ بْنُ الْوَلِيدِ عَنْ غَيْرِ إِمْرَةٍ فَفُتِحَ لَهُ ـ وَقَالَ ـ مَا يَسُرُّنَا أَنَّهُمْ عِنْدَنَا ". قَالَ أَيُّوبُ أَوْ قَالَ " مَا يَسُرُّهُمْ أَنَّهُمْ عِنْدَنَا ". وَعَيْنَاهُ تَذْرِفَانِ.