Sahih al-Bukhari 3656
Book 62: Companions of the Prophet · Narrated by Ibn `Abbas
Arabic
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا أَيُّوبُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " وَلَوْ كُنْتُ مُتَّخِذًا مِنْ أُمَّتِي خَلِيلاً لاَتَّخَذْتُ، أَبَا بَكْرٍ وَلَكِنْ أَخِي وَصَاحِبِي ".
English translation
Narrated Ibn `Abbas:The Prophet (ﷺ) said, "If I were to take a Khalil, I would have taken Abu Bakr, but he is my brother and my companion (in Islam)
Reference: Sahih al-Bukhari 3656, Book of Companions of the Prophet. English translation by Dr. Muhammad Muhsin Khan.