(106) باب فِي التَّوَلِّي يَوْمَ الزَّحْفِ
Abu Sa'id said "The verse "If any do turn his back to them on such a day" was revealed on the day of the Battle of Badr." (ID)
Reference (ID): Sunan Abi Dawud 2648 (ID)
In-book reference (ID): Book 15, Hadith 172 (ID)
English translation (ID): Book 14, Hadith 2642 (ID)