Philosophy of Fasting

"Fasting subdues the enemy of Allah, which is the lower self (nafs). The reason is that our lust and desires are the tools of the devil, and eating and drinking, which are the things that make one's fasting void, are eliminated through fasting. Therefore, fasting crushes the desire, and consequently, the lower self and the devil are also crushed."

Allama Sayyid Muhammad Husayn Husayni Tihrani (rh)