The command of the prayer is in the Qur'an, but its details as to how to pray is in Sunnah.
Haddaba sida Qur'aanka dhexdiisa ku cad Muslimiinta marka ay maqlaan u yeeridda salaadda jimcaha, waxaa la farayaa inay markiiba ka soo kacaan hawl kastoo ay faraha kula jiraan una soo deg-degaan xusidda Eebbe.