Differences Of Opinion In Fiqh Laws
In Quran (2: 185) God says, that the traveler and sick are allowed to keep fast in other days after Ramada. Only two categories: Traveler and Sick are mentioned. We figure out the cause and that is the extra labour or trouble they have to face in this condition, (this is what explicitly mentioned too in the very verse that God intend ease and not hardship for you in the religion). Now we apply on all cases where human being face extra labour or trouble in case they keep fast and advise them to keep them later when they feel at ease.