Ṣaḥīḥ al-Bukhārī
صَحِيحُ البُخَارِي
Considered to be the most authentic after the Qurʾān. Full name: al-Jāmiʿ al-Musnad al-Ṣaḥīḥ al-Mukhtaṣar min Umūr Rasūlallāh ﷺ wa-Sunnatihī wa-Ayyāmihī (الجامع المسند الصحيح المختصر من أمور رسول الله ﷺ وأيامه) (The Comprehensive Summarized Authentic Chains from the Affairs of the Messenger of Allah ﷺ, his Sunnah, and his Life and Times). Sources: sunnah.com for the Arabic text and English translation. The English translation has been improved by myself and other contributors.
Random ḥadīth in Bukhārī
On the day of the Conquest, the Prophet ﷺ entered Mecca, wearing a helmet on his head. When he took it off, a man came and said, "Ibn Khatal is clinging to the curtain of the Kaʿba." The Prophet ﷺ said, "Kill him." (Malik a sub-narrator said, "On that day the Prophet ﷺ was not in a state of Ihram as it appeared to us, and Allah knows better.")
أَنَّ النَّبِيَّ ﷺ دَخَلَ مَكَّةَ يَوْمَ الْفَتْحِ وَعَلَى رَأْسِهِ الْمِغْفَرُ فَلَمَّا نَزَعَهُ جَاءَ رَجُلٌ فَقَالَ ابْنُ خَطَلٍ مُتَعَلِّقٌ بِأَسْتَارِ الْكَعْبَةِ فَقَالَ اقْتُلْهُ قَالَ مَالِكٌ وَلَمْ يَكُنِ النَّبِيُّ ﷺ فِيمَا نُرَى وَاللَّهُ أَعْلَمُ يَوْمَئِذٍ مُحْرِمًا