Electricity is conducted through copper wires. The sender and the receiving set of a radio are attached to each other through electromagnetic waves. It is written in the twentieth letter of the fourth volume of the book Maktûbât that what attaches hearts to one another is love. When a person sees a Walî and talks with him or reads his books, he loves him, seeing that he adheres to Islam perfectly, that his knowledge is like an ocean, that he has excellent morals, and that he does favours to everyone. Since he loves Rasûlullah, he also loves the person who is in his way. But, loving these good characteristics of his is not sufficient. He has to know very well and love the owner of these good characteristics. For, hypocrites, disbelievers, and freemasons can have the same good qualities, too. So, it is necessary to know that he is a murshid, to recognize his face, figure and physiognomy. It must be a pleasure for one to see and dream of him by heart. This is called performing râbita. By always performing râbita towards him, it will be as if he were seeing him. Everything that has an effect on sense organs has an effect on the heart, too. As seeing something beautiful has an effect on the heart, so thinking of it will have an effect on the heart and the heart will enjoy it. That is, performing râbîta will be like being with him. The more the love, the more light will he receive. Hadrat ’Ubeydullah-i Ahrâr said: “While attaching the heart to property, to goods and to every kind of worldly affairs is not considered a crime, why should it be a crime to attach the heart to a Mu’min (Muslim)?” Endless Bliss First Fasicle | Page 280-281