(Creating an ideal society requires discipline and self-restraint among the individu- als.) O You who have chosen to be graced with belief! A collective exercise of 'Saum' or self-control is prescribed for you as it was prescribed for those before you so that you become empowered against evil. [I have translated 'Saum' as self- control instead of the common 'fasting' since it involves more than fasting, such as abstaining from intimate husband-wife relationship. Saum = Self-control = Abstinence = Collective Exercise of Self-restraint by the Soci- ety = A conscious collective e ort to desist from common vices such as im- patience, anger, unfair criticism, envy, impolite conversation or conduct, etc. Taqwa = Journeying in security = Being careful = Being empowered against evil = To avoid overstepping the laws = Exercising caution = Strengthening one's 'self' = Preserving the 'self' against deterioration = Good conduct]
In my understanding, food and water is only a small part of it. Also I did another response above this one. Read over that. InshaAllah may we all be guided.