Pillars & FiqhPrayer is the second pillar of Islam; it consists of the five prayers obligatory in the day and night, and it is the first matter for which a servant will be held to account on the Day of Resurrection. It is the pillar of the religion and the distinguishing line between a Muslim and a disbeliever. It is obligatory upon every sane, adult Muslim to perform it at its prescribed times, with its conditions and pillars.
Source:حديث جبريل، رواه مسلم؛ والبقرة: 43

