It is said in the Qur'an An-Nisa (4) verse 103, the pronunciation "... aqimish-sholata innash-sholata kanat 'alal-mu'mina kitabam mauquta ..." which means "... establish the prayer (because) the believer (to Allah) is a prescribed provision of his (time) ... ". Kalam / Allah sentence contains a command that is "aqimish-sholata" which means "stand up prayer ..