Hadith 15:212
Anas said “Eighty Meccans came down from the mountain of Al Tan’im against the Prophet(ﷺ) and his Companions at the (time of the) dawn prayer to kill them. The Apostle of Allaah(ﷺ) took them captive without fighting and the Apostle of Allaah(ﷺ) set them free. Thereupon Allaah Most High sent down “He it is Who averted their hands from you and your hands from them in the valley of Makkah,” till the end of the verse.
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، قَالَ حَدَّثَنَا حَمَّادٌ، قَالَ أَخْبَرَنَا ثَابِتٌ، عَنْ أَنَسٍ، أَنَّ ثَمَانِينَ، رَجُلاً مِنْ أَهْلِ مَكَّةَ هَبَطُوا عَلَى النَّبِيِّ صلى الله عليه وسلم وَأَصْحَابِهِ مِنْ جِبَالِ التَّنْعِيمِ عِنْدَ صَلاَةِ الْفَجْرِ لِيَقْتُلُوهُمْ فَأَخَذَهُمْ رَسُولُ اللَّهِ صلى الله عليه وسلم سَلَمًا فَأَعْتَقَهُمْ رَسُولُ اللَّهِ صلى الله عليه وسلم فَأَنْزَلَ اللَّهُ عَزَّ وَجَلَّ وَهُوَ الَّذِي كَفَّ أَيْدِيَهُمْ عَنْكُمْ وَأَيْدِيَكُمْ عَنْهُمْ بِبَطْنِ مَكَّةَ إِلَى آخِرِ الآيَةِ .
Original Reference: Sunan Abi Dawud 2688