If a person knew from what position the Almighty God called him to fast in His saying, “O you who have believed,” and that He was addressing himself alone with this assembly, then He said, “Good morning, for every greeting from you there is a sadaqa.” So He made the obligation general for a single person, and if this is in his veins, then where are you with regard to his limbs? His hearing, his sight, his tongue, his hand, his stomach, his feet, his genitals, and his heart, which are the heads of his external being, and every predatory body is addressed with fasting, which specializes in it from abstaining from what has been prohibited for it and forbidden from disposing of it, by saying, “Fasting is decreed for you.”