One can attain real happiness and peace of mind only through belief in and submission to Allah the one true God.
The ultimate truth in Islam is: There is only one God to worship, Allah the Creator of all. No one& nothing is above or equal to Him.
“It is He (Allah the one true God) who created the night and the day, and the sun and the moon.” (The Quran 21:23)
“He (Allah the one true God) created the Heavens and the Earth for Truth.” (The Quran 39: 5)
Islam means submission to the one true God (Allah), the Creator.
Allah is the Arabic name for the One true God, the Creator of mankind.