This book talks about fasting and the importance of fasting in the animal world .. a divine year .. as fasting is the Sunnah of God on the earth for its creatures from a human and an animal .. In all religions, God is the age Vitality occurs to her bodies or as a result of some diseases. But it is not called reluctance to food and drink, the characteristic of fasting, but it takes another name, which is the winter of the winter ....