Generally regarded as the single most authentic collection of hadiths, Sahih al-Bukhari covers almost all aspects of life in providing proper guidance from the Messenger of Allah, peace be upon him. Imam Al-Bukhari collected the Prophet's hadith for over 16 years. Before saving any hadith he performed two rakahs prayer of guidance from Allah, and when he was sure of the hadith's authenticity, he added it to his journal.