Abu Dawud
Prayer
Book Number: 002 / Hadith Number: 775
Narated By 'Aisha, Ummul Mu'minin : When the Apostle of Allah (pbuh) began his prayer, he said: "Glory be to Thee, O Allah," and "Praise be to Thee" and "Blessed is Thy name, and Exalted is Thy greatness, sand there is no god but Allah."