Contemplation and thinking— tafakkukr—is the source of Islamic spirituality. Contemplative spirituality is received through a thinking process rather than the cessation of intellectual activity. The Quran attaches great importance to reflection and serious thought. As mentioned in the Quran, the process of contemplation, tafakkur, is the beginning of the spiritual activity. Several verses in the Quran indicate that innumerable signs of God are extant in the heavens and the earth. The observance of God’s signs is the most significant source of spirituality. Man can discover God by pondering upon and contemplating His signs spread throughout His creation. Man can learn lessons from these signs to start living a God-oriented life. The concept of spirituality in Islam is based on the principle of God-Realisation. God is the treasure house of all virtues. Moreover, when man’s contact with God is established at the psychological level, an unseen, inner revolution is brought about within a person, called spirituality.