Sahih al-Bukhari 4041
Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · Narrated by Ibn `Abbas
Arabic
حَدَّثَنَا إِبْرَاهِيمُ بْنُ مُوسَى، أَخْبَرَنَا عَبْدُ الْوَهَّابِ، حَدَّثَنَا خَالِدٌ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم يَوْمَ أُحُدٍ " هَذَا جِبْرِيلُ آخِذٌ بِرَأْسِ فَرَسِهِ عَلَيْهِ أَدَاةُ الْحَرْبِ ".
English translation
Narrated Ibn `Abbas:On the day of Uhud. the Prophet (ﷺ) said, "This is Gabriel holding the head of his horse and equipped with war material
Reference: Sahih al-Bukhari 4041, Book of Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi). English translation by Dr. Muhammad Muhsin Khan.