Who is fasting obligatory upon? Fasting is obligatory upon every sane, mature Muslim. Allah tells us this in the Quran. “O, you who believe, that fasting has been prescribed upon you as it was upon the people before you, perhaps you may be of the mindful ones.” Quran 2:183.
There are three categories of general exceptions. 1. The Muslims who are allowed to break their fast but must make it up. These are the traveler, the sick person, pregnant and breastfeeding. You must make up the missed fasts before the next Ramadan.
2. The ones who should not fast but they have to make their fasts up. This is women who have their menses. They are not allowed to fast and have to make their days up. Also someone who has an unbearable sickness.
3. The ones who can break their fast and can’t make them up. This includes the elderly. They should feed a poor person for every day missed.