Revealed in the Qur'an, Surah Al-Maidah Verse 3, which means...
This day I have perfected your religion for you and completed My favour to you, and have chosen for you as religion Islam.
In My Prayers...
Allah is the greatest.
Much praise be to Allah.
And glory be to Him morning and evening.
I turn my face towards Him who created heaven and earth, being away from prejudice and being a Muslim and I am not of the polytheists.
Verily my worship, my devotion, my life and my death are for Allah, Lord of the Worlds.
There is no partner unto Him and so have I been commanded and I am among those who submit to Him.