The Outward and Inward Aspects of the Quran: It has been explained that the Holy Quran elucidates religious aims through its own words and gives commands to mankind in matter of doctrine and action. But the meaning of the Quran is not limited to this level. Rather, behind these same expressions and within these same meanings there are deeper and wider levels of meaning which only the spiritual elite who possess pure hearts can comprehend.
The Prophet, who is the divinely appointed teacher of the Quran, says: "The Quran has a beautiful exterior and a profound interior." He has also said, "The Quran has an inner dimension, and that inner dimension has an inner dimension up to seven numerous references to the inner aspect of the Quran.
The main support of these assertions is a symbol which God has mentioned in Chapter XIII, verse 17, of the Quran. In this verse divine gifts are symbolized by rain that falls from heaven and upon which depends the life of the earth and its inhabitants. With the coming of the rain, floods begin to flow and each river bed accepts a certain amount of the flood, depending on its capacity. As it flows, the flood is covered with foam, but beneath the foam there is that same water which is life-giving and beneficial to mankind.