An Excellent article by Justin Parrott:
In the name of Allah, the Gracious, the Merciful
Knowledge of God’s existence is often taken for granted by believers. The authentic religious experience—affirmed again and again in a Muslim’s daily life—makes faith in God feel so natural as to be assumed. But belief in God and the quest for existential truth is not an easy prospect for many people, especially in a social environment in which faith is derided as superstition, wishful thinking, or even as a dangerous fantasy.
In the Islamic tradition, the case for God’s existence is solid in terms of its rational foundations as well as the purpose, meaning, comfort, and guidance that it gives to our lives. The Quran inspires conviction by appealing to the aspects of the inner life of human beings, namely, to the heart and the mind. Intuition and experience work in tandem with logic and reason to arrive at a state of certainty in faith.