About the Author
Sahih al Bukhari [أبو عبد الله محمد بن اسماعيل بن ابراهيم بن المغيرة بن بردزبه الجعفي البخاري] was born in Bukhara, present day Uzbekistan. He was born on 13th Shawwal 194 [or 19th July 810 C.E.]. He authored Sahih al-Bukhari, regarded by Sunni Muslims as one of the most authentic haith[hadees] collections.
Sahih Bukhari is a collection of sayings and deeds of Prophet Muhammad (pbuh), also known as the Sunnah reported by people close to Him(pbuh). The reports of the Prophet's (saw) sayings and deeds are called ahadeeth. Imam Bukhari lived a couple of centuries after the Prophet's (saw) death and worked extremely hard to collect his ahadeeth. Each report in his collection was checked for compatibility with the Qur'an, and the veracity of the chain of reporters had to be painstakingly established. Bukhari's collection is recognized by the overwhelming majority of the Muslim world to be one of the most authentic collections of the Sunnah of the Prophet(pbuh).
Sahih Bukhari is divided into nine volumes, each of which has several books. Each book contains many ahadeeth. The ahadeeth are numbered consecutively per volume. The books really only serve to group ahadeeth together, but the volumes impose the numbering.