Imam Bukhari compiled his famous Hadith collection Sahih Bukhari in how many years?

Explanation: Imam Bukhari (810-870 AD) spent approximately 16 years compiling Sahih Al-Bukhari which is considered the most authentic book after the Quran in Sunni Islam. He examined around 600000 Hadith and included only 7397 (with repetitions) after rigorous authentication. He reportedly performed Ghusl and two rakats of prayer before recording each Hadith.