Oneness of God: He is One and the Only One. He is not two in one or three in one. This means that Islam rejects the idea of trinity or such a unity of God which implies more than one God in one.
Oneness of mankind: People are created equal in front of the Law of God. There is no superiority for one race over another. God made us of different colors, nationalities, languages and beliefs so as to test who is going to be better than others. No one can claim that he is better than others. It is only God Who knows who is better. It depends on piety and righteousness.
Oneness of Messengers and the Message: Muslims believe that God sent different messengers throughout the history of mankind. All came with the same message and the same teachings. It was the people who misunderstood and misinterpreted them. Muslims believe in Noah, Abraham, Isaac, Ismail, Jacob, Moses, David, Jesus, and Muhammad. The Prophets of Christianity and Judaism are indeed the Prophets of Islam.
Angels and the Day of Judgment: Muslims believe that there are unseen creatures such as angels created by God in the universe for special missions. Muslims believe that there is a Day of Judgment when all people of the world throughout the history of mankind till the last day of life on earth, are to be brought for accounting, reward and punishment.
Innocence of Man at Birth: Muslim believe that people are born free of sin. It is only after they reach the age of puberty and it is only after they commit sins that they are to be charged for their mistakes. No one is responsible for or can take the responsibility for the sins of others. However, the door of forgiveness through true repentance is always open.
State and Religion: Muslims believe that Islam is a total and a complete way of life. It encompasses all aspects of life. As such, the teachings of Islam do not separate religion from politics. As a matter of fact, state and religion are under the obedience of Allah through the teachings of Islam. Hence, economic and social transactions, as well as educational and political systems are also part of the teachings of Islam.