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
I heard Messenger of Allah ﷺ saying, "By Him in Whose Hands my life is! Were it not for some men who dislike to be left behind and for whom I do not have means of conveyance, I would not stay away (from any Holy Battle). I would love to be martyred in Allah's Cause and come to life and then get, martyred and then come to life and then get martyred and then get resurrected and then get martyred.
سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ وَالَّذِي نَفْسِي بِيَدِهِ لَوْلاَ أَنَّ رِجَالاً يَكْرَهُونَ أَنْ يَتَخَلَّفُوا بَعْدِي وَلاَ أَجِدُ مَا أَحْمِلُهُمْ مَا تَخَلَّفْتُ لَوَدِدْتُ أَنِّي أُقْتَلُ فِي سَبِيلِ اللَّهِ ثُمَّ أُحْيَا ثُمَّ أُقْتَلُ ثُمَّ أُحْيَا ثُمَّ أُقْتَلُ ثُمَّ أُحْيَا ثُمَّ أُقْتَلُ