As we now know, ultraviolet rays kill microbes. Tuberculous patients have their lungs cleaned through radio therapy in sanitariums. As ultraviolet rays clean the lungs, likewise, there are rays that clean the heart. These rays are called nûr and fayz. The heart’s sickness is its following the nafs, liking and being fond of the harâms. The sun radiates ultraviolet rays. And the source that radiates nûr is the heart of a Walî. The hearts of the Awliyâ are like full moon. The moon reflects the rays which it receives from the sun. And the hearts of the Awliyâ radiate to the world the nûr which they receive from Rasûlullah’s blessed heart, which radiates energy like the sun. The Awliyâ are dead. And the ones living today are not known. But, when man dies, his heart and soul do not die with him. In fact, they become stronger because they have gotten rid of the cage of the body. Today, there are electro-magnetic waves everywhere, in every room. But we do not perceive them. A receiver, e.g. a radio, is necessary to receive them.  Also, there are rays of nûr everywhere. But we do not perceive them, either. Some force or some means is necessary to receive them and to make use of them. Again this receiver is the heart. The heart is like a substance with phosphorescent properties. Dispensing nûr it has received, to dark hearts, it causes them to shine. The longer a Believer lives and the better he becomes in worshipping and taqwâ, the more nûrs will his heart contain. However, receiving these nûrs and fayds abundantly requires loving a Walî. And if he brings himself into favour with him by attending his sohbat and keeping him company, he will receive even more fayd. Endless Bliss First Fasicle | Page 279-280