Its unadulterated belief in the oneness of God and a practical application of the truth of the brotherhood of man for those who are nominally within its fold are two distinctive contributions of Islam.
If the world had two gods, it would surely go to ruin-this is the first premise. Now it is known that it has not gone to ruin-this is the second premise. From these premises the conclusion must of necessity follow, that is, the denial of two gods.