حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ‏:‏ حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ الأَنْصَارِيُّ، قَالَ‏:‏ حَدَّثَنَا عَبْدُ اللهِ بْنُ عَوْنٍ، عَنْ مُحَمَّدِ بْنِ مُحَمَّدِ بْنِ الأَسْوَدِ، عَنْ عَامِرِ بْنِ سَعْدٍ، قَالَ‏:‏ قَالَ سَعْدٌ‏:‏ لَقَدْ رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم، ضَحِكَ يَوْمَ الْخَنْدَقِ حَتَّى بَدَتْ نَوَاجِذُهُ قَالَ‏:‏ قُلْتُ‏:‏ كَيْفَ كَانَ‏؟‏ قَالَ‏:‏ كَانَ رَجُلٌ مَعَهُ تُرْسٌ، وَكَانَ سَعْدٌ رَامِيًا، وَكَانَ يَقُولُ كَذَا وَكَذَا بِالتُّرْسِ يُغَطِّي جَبْهَتَهُ، فَنَزَعَ لَهُ سَعْدٌ بِسَهْمٍ، فَلَمَّا رَفَعَ رَأْسَهُ رَمَاهُ فَلَمْ يُخْطِئْ هَذِهِ مِنْهُ يَعْنِي جَبْهَتَهُ وَانْقَلَبَ الرَّجُلُ، وَشَالَ بِرِجْلِهِ‏:‏ فَضَحِكَ النَّبِيُّ صلى الله عليه وسلم حَتَّى بَدَتْ نَوَاجِذُهُ قَالَ‏:‏ قُلْتُ‏:‏ مِنْ أَيِّ شَيْءٍ ضَحِكَ‏؟‏ قَالَ‏:‏ مِنْ فِعْلِهِ بِالرَّجُلِ‏.‏

“Sa'd said: ‘I had seen the Prophet (Allah bless him and give him peace) laugh at the Battle of the Trench, so hard that his molar teeth became apparent.’ I said: ‘How was his laughter?’ He said: ‘There was a man holding a shield while Sa'd was shooting, and the man was saying such-and-such and such-and-such, with the shield covering his forehead. Sa'd therefore aimed an arrow at him and shot it when he raised his head, so it did not miss this part of him — meaning his forehead — and the man toppled over and kicked up his foot. The Prophet (Allah bless him and give him peace) then laughed so much that his molar teeth became apparent.’ I asked: ‘What made him laugh?’ He replied: ‘What he did to the man!”