If a man wants to practice celibacy by simply restraining the reproductive organs, it is not possible. The area below the navel is the reproductive zone. If all the attention was paid only to this area, celibacy would be difficult to practice. For celibacy, one has to meditate on the area of the throat.
The mind should focus all attention on the limits of the four glands, the pituitary, the pineal, and the thyroid, not to mention the hypothalamus.
The one who wants to conquer anger, sexual passions etc., should exercise restraint on the upper part of the body. By just concentrating on the lower part of the body, passions are not reduced.
It is now easy to understand how Shiva put an end to Kama with his third eye. The one who is able to, with the help of meditation, refine the working of the agya chakra, refine the center of intuition and the working of the pituitary and the pineal glands, conquers sexual passions. When these work well the secretions undergo a change. With meditation, concentration, a pure conscious mind and resolve, the secretions are restrained. It does not go to the lower parts of the body. If the secretions do not go downwards then automatically sexual passions are put out. This idea of the burning of Kama or of the third eye cannot be understood without anekanta.